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1.75亿学生的选择
小学四年级第二单元递等式,要加(+),减(-),乘(×),除(÷)!
158+262+138 375+219+381+225 － （181+2564）+2719 378+44+114+242+222 276+228+353+219 (375+1034)+(966+125) ()+1017 99+999+ 7755－()
－1065 899+344 －317－357 －214 497－299
12×25 75×24 138×25×4 (13×125)×(3×8) (12+24+80)×50 704×25 25×32×125 32×(25+125) 88×125 102×76 58×98 178×101－178 84×36+64×84 75×99+2×75 83×102－83×2 98×199 123×18－123×3+85×123 50×(34×4)×3 25×（24+16） 178×99+178 79×42+79+79×57
1 3 3 4 1248÷24 3150÷15 4800÷25 2 2356－（） 1235－（） 75×27+19×2 5 31×870+13×310 4×(25×65+25×28) 1. 3/7 × 49/9 - 4/3 2. 8/9 × 15/36 + 1/27 3. 12× 5/6 – 2/9 ×3 4. 8× 5/4 + 1/4 5. 6÷ 3/8 – 3/8 ÷6 6. 4/7 × 5/9 + 3/7 × 5/9 7. 5/2 -（ 3/2 + 4/5 ） 8. 7/8 + （ 1/8 + 1/9 ） 9. 9 × 5/6 + 5/6 10. 3/4 × 8/9 - 1/3 11. 7 × 5/49 + 3/14 12. 6 ×（ 1/2 + 2/3 ） 13. 8 × 4/5 + 8 × 11/5 14. 31 × 5/6 – 5/6 15. 9/7 - （ 2/7 – 10/21 ） 16. 5/9 × 18 – 14 × 2/7 17. 4/5 × 25/16 + 2/3 × 3/4 18. 14 × 8/7 – 5/6 × 12/15 19. 17/32 – 3/4 × 9/24 20. 3 × 2/9 + 1/3 21. 5/7 × 3/25 + 3/7 22. 3/14 ×× 2/3 + 1/6 23. 1/5 × 2/3 + 5/6 24. 9/22 + 1/11 ÷ 1/2 25. 5/3 × 11/5 + 4/3 26. 45 × 2/3 + 1/3 × 15 27. 7/19 + 12/19 × 5/6 28. 1/4 + 3/4 ÷ 2/3 29. 8/7 × 21/16 + 1/2 30. 101 × 1/5 – 1/5 × 21 31.50＋160÷40 32.120-144÷18+35 33.347+45×2-4160÷52 34（58+37）÷（64-9×5） 35.95÷（64-45） 36.178-145÷5×6+42 37.812-700÷（9+31×11） 38.85+14×（14+208÷26） 39.（284+16）×（512-8208÷18） 40.120-36×4÷18+35 41.（58+37）÷（64-9×5） 42.(6.8-6.8×0.55)÷8.5 43.0.12× 4.8÷0.12×4.8 44.（3.2×1.5+2.5）÷1.6 （2）3.2×（1.5+2.5）÷1.6 45.6-1.6÷4= 5.38+7.85-5.37= 46.7.2÷0.8-1.2×5= 6-1.19×3-0.43= 47.6.5×（4.8-1.2×4）= 0.68×1.9+0.32×1.9 48.10.15-10.75×0.4-5.7 49.5.8×（3.87-0.13）+4.2×3.74 50.32.52-（6+9.728÷3.2）×2.5 51.（136+64）×（65-345÷23） 52. 420+580-64×21÷28 53.（58+370）÷（64-45 (25%-695%-12%)*36 3/4*3/5+3/4*2/5 (1-1/4+8/9)/7/9 2/3+1/6/3/24+2/21 1*8/15*3/5 10-3/4/9/10-1/6 [(1/3+1/2)/5/6-1/3]/1/7 2/3/5+3/5/2+3/4 1/[(2-2/3/1/2)]*2/5 3^2*3.25678 3^3-5 4^2-34% 3.25-315% 7^3+445% 12+9 123+456-52*8 45%+6325 1/2+1/3+1/4 789+456-78 45%+54%-36% 5.4÷1.8+240×1.5 9000÷72×(1.25×0.7×8) 61-(1.25+2.5×0.7) [(10-0.8)+9.85]-2÷0.125 7.28÷0.25x4 25*6+69*3 77+23*77 59+69+36+26+66.6 45*99+99*55 77*99+23+99 315+351+153+135+531+513 44+5555
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1.75亿学生的选择
递等式计算，能巧算的要巧算472+239+661978+56-878．
（1）472+239+661=472+（239+661）=472+900=1372；（2）=8324-（813+187）==7324；（3）=802×7=5614；（4）978+56-878=978-878+56=100+56=156；（5）=3042-71=2971；（6）==3947．
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（1）利用加法结合律简算；（2）利用减法的性质简算；（3）按照从左到右的顺序计算；（4）利用加法交换律简算；（5）先算除法，再算减法；（6）先算乘法，再算加法．
本题考点：
整数四则混合运算；运算定律与简便运算．
考点点评：
整数混合运算的关键是抓住运算顺序，正确按运算顺序计算，适当利用运算定律简算即可．
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04-递等式计算
计算――递等式计算－1－(01) (02) (03) (04) (05) (06) (07) (08) (09) (10) (11) (12) (13) (14) (15) (16) (17) (18) (19) (20) (21) (22) (23) (24) (25)(0.12×50－0.99)×1.4
(0.23×41－1.03)÷0.2＋3.5 (0.24×5÷0.24×5)÷0.25 (0.7＋1.7)×15－36 (0.72×12.5＋0.72×4.5)÷0.72－0.72 (0.8×0.6÷1.2)÷0.25 (1.04×8.05)÷(3.24÷32.4) (1.2＋10.56÷1.2)÷5 (1.25×8÷1.25×8)÷0.1 (1.4×0.3＋2.46)÷1.8 (1.44－0.96)÷(3.2×1.5) (1.6＋4.5÷0.9)－2.671 (1.7＋0.8)÷1.25×0.8 (1.8×4.2＋2.44)÷1.25 (1.8－0.6)÷[(0.2＋1.8)×2.4] (1＋2.3＋3.4)×(2.3＋3.4＋6.5)－(1＋2.3＋3.4＋6.5)×(2.3＋3.4) (1÷0.5－0.5÷1)÷2.5×0.4 (1－0.2)×(4－3.68)÷0.01 (1－0.7)×(0.54＋7.69)÷0.01 (1－0.8)×(4－3.68)÷0.01 (1－0.91)×(5＋4.5)÷0.01 (10＋4.92÷2.4)×0.2－2.4 (10＋9.744÷2.4)×40.5－12.03 (10－0.2)×(9.5＋5) (100－19.52)÷(7.34＋0.708)计算――递等式计算－2－(26) (27) (28) (29) (30) (31) (32) (33) (34) (35) (36) (37) (38) (39) (40) (41) (42) (43) (44) (45) (46) (47) (48) (49) (50)(10－8.4÷7)×3－3.4 (12.4＋8.6)÷2.5×4 (12.5×0.8÷12.5×80)÷0.1 (12.6－0.75＋0.25)÷(5.5×0.2) (14.5－27.2÷3.4)×12.4 (15×2.7＋4.05)÷(1－0.01) (19＋6)×(3.85－2.6)×32 (2.25×6.75＋6.75×0.75)÷(2.5×2.4) (2.4×0.5＋82)÷(1－0.36) (2.5×0.4÷2.5×0.4)÷0.1 (2.6×0.3－2.5)÷(5.01－5) (2÷0.5－0.5÷2)÷2.5×0.4 (205×24－120)÷25×4 (22－0.2)×(9.05＋0.5) (25÷20＋20÷25)×1.01 (27.84＋53.16)×32.5÷27 (28.8÷3.2＋1)÷0.1 (28.8÷3.2＋1.08)÷0.1 (28.8－25.12)÷20×[2÷(4.1－4.09)] (3.2×0.4－0.68)÷0.25×4 (3.2－2.75)×(2.4－1.07) (3.25÷7.5－0.01)÷0.01 (3.42－1)÷0.4＋0.95 (3.72＋0.48)÷[(2－0.6)×0.02] (3.74－1.8)×(3.94＋6.86)计算――递等式计算－3－(51) (52) (53) (54) (55) (56) (57) (58) (59) (60) (61) (62) (63) (64) (65) (66) (67) (68) (69) (70) (71) (72) (73) (74) (75)(3.8－7.5÷2.5)×(1－0.75) (3÷0.75－0.75÷3)÷0.001 (31.5－60.01÷8.5)×5.3 (36－17.1)×3.5＋18.9×6.5 ()÷25×4 (38－18)×24÷(13＋27) (4.74＋6.5×2.04)÷0.45 (4.8＋5.6)÷[6.24×(6.24－6.24)＋10.4] (4÷0.5－0.5÷4)×(1－0.99) (4÷0.5－0.5÷4)×8 (5.12＋28.16÷32)÷(3－2.85) (5.6－5.6×0.6)÷(0.02＋1.1) (5÷2＋2÷5)÷0.01 (5÷4－4÷5)÷0.001 (5－3.8)×0.01＋0.99 (6.21－0.51)×(7.7－2.2) (6.237÷0.99＋0.15)×(1.55－0.95) (6.25÷7.5＋6.25÷2.5)÷0.01 (6.52＋4.48)×2.5＋0.9 (6.7＋3.13)×[2÷(2.1－2.08)] (6.74＋6.74÷6.74－6.74)×6.74 (67.8＋9.48)÷0.96 (5)÷36＋64 (7.2÷2＋7.2÷4)×0.4 (7.2－4.005)÷0.45－7.1计算――递等式计算－4－(76) (77) (78) (79) (80) (81) (82) (83) (84) (85) (86) (87) (88) (89) (90) (91) (92) (93) (94) (95) (96) (97) (98) (99)(7.8＋0.23)÷0.5 (7.8＋4.8)÷(32×0.375) (7.8－3.8)÷(4.5＋3.5)÷0.1 (75－36.8)÷2.5×(23.5－17.5) (8.1－7.89)÷0.2＋17.28 (8.23－5)×7.2＋9.36 (8＋2.72)×(37.1－37.06) (9.3－19.72÷3.4)×18.2 (9.3－27.2÷3.4)×1.2 (9.4－5.8)×2.07 (9.62－7.16)÷0.82×2.7 (9.6－8.4÷4)×1.4 [(11.2＋3.6)÷3.7－0.6]×7.5 [(15.6－15.6)×2.5＋2.5]×0.32 [(17.2－14.7)×0.8＋0.24]÷0.4 [(2.86＋1.14)×0.2－0.7]÷0.1 [(2.86＋1.4)×0.2－0.76]÷0.5 [(20－5.9)×3.5－25.43]÷59.8 [(27－0.5)＋1.5×5]÷1.7 [(30.4－9.85)×1.6－2.72]÷10.4 [(30－9.8)×0.6－2.12]÷10＋90 [(5.1－4.6)×0.6－0.1]÷0.05 [(5.84－3.9)÷0.4＋0.15]×0.92 [(8.4＋12.6)÷0.25－74]×0.8(100) [0.02＋(7.28－0.48)×1.5]÷102.2计算――递等式计算－5－(101) [0.09＋(6.48－1.8)÷46.8]×30 (102) [0.15＋(3.74－1.8)÷0.4]÷0.01 (103) [0.15＋(3.8－1.8)÷0.4]×2 (104) [0.2＋(3.5－0.7)÷0.4]×20 (105) [0.34＋(3.74－1.8)÷0.5]×30 (106) [0.35÷(3.74－3.24)÷0.4]×0.28 (107) [0.5＋(3.74－2.8)÷0.01]×30 (108) [0.68÷(3.2－3.03)＋1.4]÷(6－0.6) (109) [0.8－1.5×(0.7－0.6)]×4.5 (110) [0.84＋0.75×(0.55－0.15)]÷0.19 (111) [1.3＋(16.9－0.87÷0.3)]×8.5 (112) [1.44÷(4.75－1.42×2.5)]÷0.25×4 (113) [1.801－(0.161＋0.299÷0.46)]×0.4 (114) [1.8－1.8×(1.8－1.8)]÷0.36 (115) [1.8－1.8÷(1.8＋1.8)]÷0.4 (116) [1.841－(0.31＋5.1×0.3)]×0.4 (117) [1.86＋(0.53－0.46)×6]÷0.05 (118) [1＋(2.19－1.89)÷0.5]×0.5 (119) [10.832－(5.8＋0.42)×0.6]÷40 (120) [132.6÷1.5－(92－3.6)＋7.8]÷15.6 (121) [15.8＋(4.4－1.6)×1.5]÷4 (122) [17.2－(1.5＋0.8)×3]÷1.03 (123) [2.6＋2.6×(2.6－2.5)]÷2.6 (124) [2.7＋(14.4－12)÷0.8]×6 (125) [2.7－2.7×(2.7－2.7)]÷0.54计算――递等式计算－6－(126) [20.4－(16.9－0.87÷0.3)]×1.5 (127) [3.19＋(0.36÷0.9＋0.01)]×0.05 (128) [3.8－7.7÷(5×0.5)]÷7.2＋0.8 (129) [30.2－(7.25＋0.75×8)]－1.75＋0.25 (130) [32－(7.25＋0.75×8)]×11.4 (131) [38＋(16.9－0.87÷0.3)]×1.43 (132) [4.1＋0.99÷(6.8－3.5)]×0.95 (133) [4＋(2－0.8)×11]÷4 (134) [46.4－(7.9－2.35)÷11.1]÷510 (135) [5.6＋6.5×(6.25－2.65)]÷2.5 (136) [5.8－2.6×(48.2－48.2)]÷5.8 (137) [5.89＋60.5×(6.25－2.65)]÷0.2 (138) [5.89＋60.5×(6.25－2.65)]÷0.2×5 (139) [6.9－(0.15＋0.05)]×(0.255÷0.25) (140) [7.8÷(12－7.8)×6]÷1.1 (141) [8.5＋4.36×(3.75－1.25)]×0.2 (142) [8.52＋1.48×(3.75－1.75)]÷0.02 (143) [80－(8.25÷0.6＋1.25)]×2.6 (144) [9.15－0.95×(4.3＋3.7)]÷0.1 (145) 0.1×[12.7－(3.06÷0.75＋3.6×0.38) (146) 0.12×(0.64÷0.8＋8)－0.016 (147) 0.17×0.9＋0.725÷5 (148) 0.2×[(5.31＋7.19)－12.5÷2.5]÷2.5 (149) 0.25×[1.6＋(1.24－0.7)÷0.5] (150) 0.25×8÷20－0.78÷7.8计算――递等式计算－7－(151) 0.27×0.54＋0.378÷1.4×0.46 (152) 0.3＋(4.08－77÷25)×40.3 (153) 0.3＋(40.8－77÷2.5)×40.5 (154) 0.3＋0.3÷0.3－0.3×0.3 (155) 0.31×0.69÷0.31×0.69 (156) 0.32＋1÷(2.2－2.4×0.5) (157) 0.4＋2.5÷0.08 (158) 0.45＋(0.9－0.45×0.2)÷4.5 (159) 0.47×0.8÷37.6 (160) 0.49×[1÷(4.1－4.09)]＋6 (161) 0.575÷0.4＋0.575×0.4 (162) 0.65×5.6＋0.35×4.4 (163) 0.78÷0.2÷0.39 (164) 0.8×[66÷(2.1－0.9)]＋1 (165) 0.86×(6－6÷4)×2 (166) 0.9×(5.2－0.7)÷0.15 (167) 0.95×1.6－2.84÷7.1 (168) 0.96÷1.6×50－2.4×5.05 (169) 1.1÷[(9.1－8.99)×0.5]－1.5×0.6 (170) 1.183÷(4.12－3.99)－746×0 (171) 1.2＋8.8×1.25 (172) 1.25×0.8÷4×0.25 (173) 1.25×4.8－0.65÷0.26 (174) 1.4×3－1.2×2.57 (175) 1.4÷2.5＋3.6÷2.5计算――递等式计算－8－(176) 1.5＋4.5÷1.5＋4.5 (177) 1.5×[(4.8－0.36÷0.6)＋1.8] (178) 1.69÷(5.7＋0.8)×200 (179) 1.8×(25.678＋4.322)÷0.1 (180) 1.8÷[(9.8－4.6)÷0.13－39.6] (181) 1.9÷3.8＋3.8×1.01÷1.9 (182) 1÷(2.5＋0.75×1.25×8) (183) 1÷[12.94－(12.3＋0.21×3)] (184) 1÷0.1－1×0.1＋0.1÷1－0.1×0.1 (185) 10－(12.5×8＋1860÷93)×0.003 (186) 10.04＋17×3.74÷(10.8－2.7) (187) 10.2×2.4×0.087 (188) 10.5×(6＋1.36÷0.4) (189) 10.5×[1.99＋7.014÷(10－8.6)] (190) 10.5×0.8－(12.86－0.86)÷6 (191) 10.7－2.9×0.2÷0.25 (192) 10÷(1.328＋1.172)×0.04 (193) 10÷[(10－9.99)×0.2]－1.7×30 (194) 100－(28.8÷3.2＋1)×10 (195) 100.1÷0.91－100.1 (196) 100.1÷0.91－100.95 (197) 100.2－10.2÷0.4＋0.6×0.1 (198) ×(8.8＋0.8) (199) .25×4 (200) 100－42＋15150÷75计算――递等式计算－9－(201) 100－94.3÷[(19.2＋26.8)×0.5] (202) 101÷[(100.1－99.09)×10] (203) ÷13＋17×107 (204) 105＋24×19－80÷16 (205) 10－62.5÷[(12.2－1.6×7)÷0.16] (206) 11－(0.2＋6.86÷0.7)×0.5 (207) 11.44÷4.4＋5.6 (208) 11.6×[18.4－12.74÷(6－1.1)] (209) 12.2×[5.5－1.75×(1÷0.5)] (210) 12.5－[(8.4＋12.6)÷0.25－84]×0.8 (211) 12.5＋[(6.5＋9.1)÷1.3]－9.9＋0.1 (212) 12.5×(8＋0.4)＋2.5÷0.1 (213) 12.5×(8＋0.4)＋25 (214) 12.5÷0.25－11.3×0.7 (215) 12.6÷[(5＋1)×(0.8－0.3)] (216) 12.7－22.78÷3.4 (217) 12.8÷[1.6＋(2.75－1.15)×3] (218) 124×12＋(200－1326÷13) (219) 125＋75×8 (220) 125×[121－(46－29)]÷100 (221) 125×8.08＋2.7×4.2÷0.2 (222) 128.6÷(20.94＋9.744÷2.4)×0.25 (223) 13÷[10.24－(9.882＋0.3×0.76)] (224) 14.4×[(5.2＋1.8－5.2＋1.8)÷0.25] (225) 15.4＋4.6×0.5计算――递等式计算－10－(226) 15.8－15.8×0.4 (227) ÷3×12 (228) 158.6－8.6÷0.43×5.8 (229) 159.3－[(44×5.5＋4.5)÷5] (230) 16.275＋27.25×0.1－4.08÷40 (231) 16.5×4.8－97.6÷32＋3.85 (232) 16.8÷(3.2×4－5.8) (233) 16.8÷0.4＋2.4×1.5 (234) 168÷5－33.6×(0.25＋0.5) (235) 17.3＋6.9÷0.23－9.9×1.01 (236) 17.8－12.38＋7.62 (237) 17×75＋25 (238) 18÷[(20.75－9.5)×0.4]－0.01 (239) 187－56÷2×5 (240) 19.31－1.755÷0.13×0.25 (241) 19.823＋11.6÷0.2－9.4×1.85 (242) 190－240÷60×0.5＋40 (243) ÷16 (244) 19－7.2÷4×8 (245) 2.08÷3.2×15 (246) 2.19÷[(27.29－4.3×3.8)÷0.5] (247) 2.25×[9.6÷(2.56÷3.2)] (248) 2.34×3＋0.272÷0.4 (249) 2.4×[(10－0.34×0.25)－9.915] (250) 2.4÷0.15＋2.4÷0.75＋2.4计算――递等式计算－11－(251) 2.46÷[(437＋563)×(1－0.9)] (252) 2.5×(8＋0.4)＋2.5÷0.1 (253) 2.5×[12÷(3.8－2.6)]＋2 (254) 2.5×[12÷(3.8－2.6)]÷0.4 (255) 2.5×[61.2÷15－(14.47－38.23)] (256) 2.5×[723.6÷15－(41.47－38.23)] (257) 2.5×5.5＋4.5÷2.5 (258) 2.5÷[(17.2－4.5×3.6)÷0.04] (259) 2.7×(0.5－1.875÷6.25)＋14.46 (260) 2.75－4.68＋5.32 (261) 2×[(5.31＋7.69)－12.5÷2.5] (262) 2×[(5.31＋7.91)－12.5÷2.5]÷2.5 (263) 2×[9－(10.6－6.4÷4)] (264) 20.28÷[21.6÷(97.2＋10.8)] (265) 20.8÷[(14.21÷3.5＋20)×0.5－1.63] (266) 20－6.25÷[(17.2－9×1.8)÷2] (267) 20－62.5÷[(12.2－1.6×7)÷0.16] (268) 21.4－13.6＋6.4 (269) 21.5÷0.05×0.96 (270) 21.5－18.4＋6.32÷0.8×0.7 (271) 21.6÷[64.8－(48.6－2.7×2)] (272) 210.5＋(6.05－3.35)÷1.5×0.9 (273) 218－5×(60－50) (274) 23.1÷0.75－1.5×2.04 (275) 24×(7.5－3)÷0.4×2.5计算――递等式计算－12－(276) 24×8.7÷24×8.7 (277) 25－(6＋3.936÷1.23)×2.5 (278) 25.16÷3.7－(6.2＋0.4) (279) 25.6＋9.6÷(0.29－0.25) (280) 26.1－0×(25.4－5.4)＋1 (281) 26.15×(4.6×0.299÷0.23) (282) 260＋99×12－2 (283) 260÷0.125÷8÷0.5 (284) 29.4÷[(32.6＋47.4)×(1－0.99)] (285) 3.006－3.417÷34＋8.75÷1.25 (286) 3.08×0.8÷24.64 (287) 3.2×[(15.2－4×3.6)÷0.16] (288) 3.2÷3.2＋0÷3.2×3.2 (289) 3.45＋1.7×0.9－7.25÷5 (290) 3.5－[10－(0.2＋6.37÷0.7)]×0.5 (291) 3.5×[6.8－(1.6＋3.6÷0.9)] (292) 3.5×[6.8－(1.6＋4)]÷8.4 (293) 3.5×2.6－4.8÷2.5 (294) 3.6＋0.4×2.5 (295) 3.6×2.5－6.5÷1.3 (296) 3.68×[1÷(2.1－2.09)]－0.6 (297) 3.69×[1÷(2.1－2.09)]＋0.78 (298) 3.7×1.5＋17.68÷5.2 (299) 3.71＋3.71×17.4－8.4×3.71 (300) 3.75×6.4×7.5计算――递等式计算－13－(301) 3.8×(0.785＋1.215)÷8 (302) 3.8×4.9＋4.9×7.2－4.9 (303) 3.92－3.92÷2.8×0.6 (304) 3.996×(15.4－15.4)÷0.36＋2.85 (305) 30.6×6.5－41.28÷4.8 (306) 34.36－(7.65＋14.62) (307) 340÷(1.7×2.5) (308) 35.05÷25×4－4.08×0.25 (309) 35×5÷35×5 (310) 36.78－8.9×1.5＋1.95÷3 (311) [37.58－(4.6＋10)×0.5]÷30.28 (312) 37＋1.7×0.9－7.25÷5 (313) 37×105＋4) 375＋25×(82×7－570) (315) 4.02×3.5＋4.8÷0.8＋0.93 (316) 4.05－2.83＋0.17 (317) 4.06×[(1－0.5)÷0.05] (318) 4.2×7.1＋58×0.71 (319) 4.34×15－1÷0.16 (320) 4.38÷[(27.29－4.3×3.8)÷0.5] (321) 4.5×[123÷15－(41.7－38.9)] (322) 4.56－(1＋0.4)×3.2 (323) 4.6×12＋13×5.4 (324) 4.7×0.05＋17.68÷5.2 (325) 4.8×(12.02－15.15÷7.5)计算――递等式计算－14－(326) 4.8÷0.16×4.8÷0.16 (327) 4.8－0.8÷[2.5×(10.15－9.07)] (328) 4.9＋5.1－1.75－0.25 (329) 4×(3.8－3÷0.5)－3 (330) 4÷[(10.75－9.5)×0.4]＋20.65 (331) 4÷0.8×4.2－5.2 (332) 4÷0.8×4.2－5.2＋1 (333) 40×93÷(45＋225÷15) (334) 428－0.28÷1.4×15 (335) 43.8÷[(16.05－4.3×3.5)÷0.2] (336) 430－874÷46×12 (337) 440－[()÷20×2] (338) 5.2＋0.8×(0.915－0.865) (339) 5.4×2＋1.8×4 (340) 5.4÷[4.86÷(12.4－10.6)÷4.5] (341) 5.43＋(8.1－7.2÷1.6)×30.5 (342) 5.66＋(2＋0.83)×7.3 (343) 5.7÷19＋7.82 (344) 5×(3.6－3÷5)－5 (345) 50－(20.75－9.5)×0.4 (346) 50÷40－40÷50＋1.2 (347) 51.6÷0.12－6.3×0.15 (348) 51.9÷(30.2－12.9)×0.62 (349) 52＋ (350) ÷221＋176计算――递等式计算－15－(351) 54÷(3.94＋6.86)×0.1 (352) 56.2＋7.2÷(0.31－0.28) (353) 6.24÷(3.12×0.5) (354) 6.3＋(9.3－19.72÷3.4)×18.2 (355) 6.3×[1÷(5.1－5.09)]－0.1 (356) 6.4＋4.8÷0.6×2－4 (357) 6.5×[1.96＋8.04÷(10－8.8)] (358) 6.5－0.36÷(2.4÷0.4) (359) 6.56－0.36÷(2.4÷0.4) (360) 6.6×[1÷(2.1－2.09)]－2.92 (361) 6.6×[14.5－(1.7＋1.8)] (362) 6.8＋3.2÷(0.32－0.24)×0.4 (363) 6.8＋6.3÷0.09 (364) 6.83－(49－2.43)＋0.76 (365) 6×[(2.4＋0.8)÷0.25]－20 (366) 6×[(2.4＋0.8)÷0.25]－206 (367) 6÷(39.454＋10.546)×0.1 (368) 6－0.28÷1.4＋2.5×8 (369) 620×37÷(904－594) (370) 628÷(51－47)－29×4 (371) ×8＋68 (372) 67.35－[20－(6.2＋6.37÷0.7)]×1.5 (373) 69.8×0.01－0.01＋31.2÷100 (374) 7.2×0.25－3.2×0.25 (375) 7.2×1.8÷3.6÷2.5÷0.4计算――递等式计算－16－(376) 7.2÷3.6－5×0.04 (377) 7.4＋2.6×4.5×5.5 (378) 7.5＋0.5×(0.8－0.316) (379) 7.5＋9.12÷(10－6.2＋3.8) (380) 7.6＋6.2÷0.31－10.6 (381) 7.8÷(32×0.375＋3.6－7.8) (382) 7.88＋0.96÷(7.5－4.3) (383) 7－0.36÷0.6×0.5 (384) 720÷16÷5 (385) 737.5－960×3.5÷12÷0.7 (386) 748÷34×68 (387) 75×[8.9＋2.73÷(1.45－0.8)] (388) 750.5－10.5×(4－2.2) (389) 76.14÷[4＋9.76÷(4.28－1.08)] (390) 8.2＋9.9×2.3 (391) 8.4÷(2－0.5)×(6.8＋1.2) (392) 8.4÷[(2－0.5)×(6.8＋1.2)] (393) 8.6＋0.24÷(3.2÷0.4) (394) 8.68÷0.56－6.4×2.31 (395) 8.8－0.8×8.8－0.8 (396) 8＋(2.76÷5.52＋2.5×0.04) (397) 8＋(3－6.528÷3.2)×0.2 (398) 8＋0.8×(0.5－0.375) (399) 8×[(10.74＋9.6)÷1.8]－26.7 (400) 8×[(15÷7.5－1.1)÷6]计算――递等式计算－17－(401) 8÷[(40.75－9.5)×0.4]＋0.36 (402) 8÷[(8.75－7.5)×0.4]＋14.6 (403) 810×81÷27 (404) 84×1.5－48＋1.5 (405) 840.6÷100－(35.27－35.19) (406) 86－(0.5＋18.9÷0.7)×0.4 (407) 87.36÷2.8－2.8×0.4 (408) 9.05＋0.4÷0.25×(8.3－4.6) (409) 9.1÷[0.45＋(1－0.5)×1.1]×0.1 (410) 9.25＋0.75×(5.47－3.74) (411) 9.3×(4.95÷0.18) (412) 9.34－(1＋1.5)×3.2 (413) 9.4－2.5÷4×(6.7＋0.7) (414) 9.6÷(2.4×2.5) (415) 9.9×(9.9－9.9×0.99) (416) 9.9×3.5＋3.5－3.5×0.9 (417) 9÷(42.356＋7.644)×0.1 (418) 9÷[(20.75－9.5)×0.4]－0.65 (419) 90÷[42.21÷(15×1.4)－1.92] (420) 930－816÷48×8 (421) 9－4.8÷6×0.5 (422) 96－96÷[150÷(40－15)] (423) 981.64÷4.4－73.8×1.4 (424) [1.801－(0.31＋5.1×0.3)]×0.4 (425) 10.14÷[10.8÷(48.6＋5.4)]计算――递等式计算－18－(426) 4.6＋30.5×1.28 (427) 10－0.03＋9.97 (428) (14.4－0.05)÷3.5＋0.5 (429) 0.17×(1.02－0.2)÷0.01 (430) 0.23×[11.4÷(0.5＋3.3)] (431) 15.6×12－7.8×14 (432) 0.21×[1÷(1.1－1.09)]－1.2 (433) (3.75－0.75×2.4)÷0.5 (434) 4.48÷0.25×0.4 (435) 6.4＋3.6×[1÷(2.1－2.09)] (436) 103.7－3.7×(9.8－9.7) (437) 2.5÷2－2÷2.5 (438) 8÷[(40.75－9.5)×0.4] (439) 10÷(25－12.5) (440) (7.25－2.25)÷(0.2＋2.3) (441) (142－58)×12÷(21×2÷21×2) (442) [156＋(44－16)×15]÷4 (443) 800÷25×(16＋34)－75＋25 (444) 2.5＋2.5×4÷2.5×4 (445) 4.2÷(3.64÷2.6) (446) 43.2÷0.09×1.4 (447) (1.9－1.9×0.9)÷(3.8－2.8) (448) (101×10.1－10.1)÷101 (449) 100－3.29＋6.71 (450) 23×2.2÷23×2.2＋1.95计算――递等式计算－19－(451) 0.1D0.1×[0.01÷(1D0.9)] (452) [9－(0.24＋0.66)×1.2]÷0.5 (453) 10÷0.125÷0.125×10 (454) 0.25÷[(17.2－4.5×3.6)÷0.4] (455) 1＋1＋0÷26＋26÷1 (456) 37＋0.17×0.9－0.725÷5 (457) 8.736÷0.56－6.4×2.31 (458) 0.4×0.8÷0.4×0.8 (459) 5.2＋0.8×(0.9－0.375) (460) 5.9＋0.4÷2.5×(4.2－1.075) (461) [1.9－1.9×(1.9－1.9)]÷0.38 (462) 8÷[(10.75－9.5)×0.4]＋20.65 (463) 10.1－3.49＋6.598 (464) 62.8－27.53－9.074 (465) 13.8＋2.981＋9.074 (466) 38.45＋0.9＋3.992 (467) 0.125＋0.75＋0.5 (468) 28.36－0.83－11.7 (469) 50－19.407－8.09 (470) 0.49＋16.55－10.6 (471) 14－2.9×4.5 (472) (7.04＋2.76)×1.2 (473) 3.6×0.9×1.4 (474) 56×3.2×0.16 (475) 7.4×0.13×0.35计算――递等式计算－20－(476) 0.008＋0.99×5 (477) 10.4－0.104×100 (478) 7.35×(0.123＋0.477) (479) 93.2×(7－6.56) (480) 0.364×0.25×18 (481) 4.07× (482) 26.38－25.98＋36.17 (483) 9.51－2.93－1.88 (484) (4.01－1.35)×5.08 (485) 870×(4.5＋2.01) (486) 8.4×3.6÷0.27 (487) 6.6÷4×3.2 (488) (3.25－1.8)÷0.5 (489) 213.6÷0.8÷0.03 (490) 40.5÷0.81×1.07 (491) 42.3÷0.09×1.5 (492) 42.5×1.4÷0.25 (493) 0.14×1.2÷3.5 (494) 35÷(0.16÷3) (495) 4.05÷0.81×0.3 (496) 15.6÷(24×0.2) (497) 2÷0.05÷0.01 (498) (1.72＋5)÷(4.8×0.5) (499) 6＋30.5×1.28÷0.8 (500) 1.42－0.48÷8×0.6计算――递等式计算－21－(501) 1÷1－0÷1＋0.1×1 (502) 1.02＋1.755÷0.39×0.08－0.96 (503) (6.5－4.7)×2.75＋0.9 (504) (20－0.2)×(9.5＋5) (505) [1.43＋(16.9－0.87÷0.3)]×8.5 (506) 0.24×1.2×150 (507) 1.72－0.8×0.09 (508) 0.225÷1.5－0.15＋0.5 (509) [(6.1－4.6)×0.8－1]×0.4 (510) 3.6×[(53.73－17.49)÷(0.36÷0.9)] (511) 0.175÷0.25×4 (512) 0.56×40.5＋0.44×59.5 (513) 54÷(3.94＋6.86)×0.8 (514) [0.15＋(3.74－1.8)÷0.4]×20 (515) 5.64＋3.24－5.79 (516) 6.25＋3.27－7.66 (517) 47.5－0.75×10 (518) 24×36÷24×36 (519) [(192－16)÷16＋18]×45 (520) 240＋5280÷(84－18)×30 (521) 4.25÷100×10 (522) 25.67＋98.43－27.265 (523) 308×19－432÷72－398 (524) [120＋480÷(80－20)]×5 (525) 46.23－35.77＋14.23计算――递等式计算－22－(526) (6＋33.28÷6.4)×(0.21＋0.09) (527) 0.3＋(4.08－77÷2.5)×40.5 (528) 1＋(1÷0.5＋2.5)×2 (529) 17.5－(8.05＋3.7)÷25×4 (530) (30.25÷2.2＋2.25)×1.06 (531) (9.03＋0.97)×(51.8－44.9)÷0.23 (532) (5×0.24＋6.8)÷(3.2×0.5) (533) 0.5＋0.1×[(1－0.05)÷1.9×0.1] (534) [(30.4－9.85)×1.6＋6.81]÷3.78 (535) [(3.8＋4.6)×4.5＋2.8×0.27]÷0.42 (536) 28－[19.1＋(3.2－0.299÷0.23)]×0.05 (537) [(3.5＋11.2÷0.32)×8.6－12.5]×1.1 (538) 1÷(4.1－4.09)×0.49＋0.51 (539) 4.2÷[1.5＋7.5×(5.94－0.54)] (540) 8×[(22÷5.5＋4.5)÷5] (541) 0.45×[2÷(7.8－7.79)]＋19 (542) (38.5＋4.5)－1.25×1.2÷0.2 (543) (5.4＋0.54)÷(0.1÷0.1－0.01) (544) [(32.1－14.7)×0.1]÷(3.3＋1.7) (545) 40.8－40.8÷3.4×0.75＋0.9 (546) (2.8＋6.37)×[1÷(1.1－1.09)] (547) (0.75＋0.25×4＋0.8)×0.5 (548) 10.5÷(4.5－3.8)÷2.5×0.4 (549) (4.3×99＋4.3)×0.2＋0.8 (550) [(10－0.85)×2.4－7.5＋2.5]÷2.5×4计算――递等式计算－23－(551) [2.78÷1.39＋(5－3.47)÷0.015]×(1－0.5) (552) 21.7÷31×50－4.2×1.4－14÷35 (553) [0.51÷(1.2－1.03)＋2.4]×5.4 (554) 3.69×[1÷(2.1－2.09)]－3.6 (555) (24＋0.4÷0.25)×0.3－5.08 (556) (3÷0.75＋0.75÷3)×0.8 (557) 12.4＋(10.15÷2.5－3)÷0.1 (558) (5.8＋5.1)×[0.11＋(1.1×0.9)] (559) [(12.16－0.8×2.7)÷2.5]÷0.01 (560) 46×12.3＋(107.46－34.98)÷0.12 (561) [(0.1－0.1×0.1)＋0.1÷0.1]÷0.1 (562) 3.4×[0.5＋(7.25＋16.5)÷0.25] (563) [5.46－0.46×(1.6＋3.4)]÷0.1 (564) [3.72－0.72×(1.6＋2.4)]÷0.1 (565) (2.5÷2＋2÷2.5)×0.4 (566) 2.16÷[64.8－(51.3－2.7×3)] (567) [(22.16－0.8×2.7)＋2.5]÷0.01 (568) 6.25÷[(17.2－9×1.8)÷0.16] (569) 3.9÷(7.8×4.9＋7.8×5.1) (570) (79.3－16.7)÷[(100－7.8×2.5)÷8.05] (571) (3.8－7.7÷2.5)×(1－0.45) (572) 6.8＋2÷(0.32－0.24)×0.4 (573) 15÷[2.4÷(4÷2.5)]×0.2 (574) [10－(0.2＋6.37÷0.7)]×0.03 (575) 9÷[(20.75－9.5)×0.4]＋0.65计算――递等式计算－24－(576) (17.5－5.6－4.4)÷0.25×4 (577) 0.85×[3＋(19.7－1.74÷0.6)] (578) 21.6×[64.8＋(51.3－2.7×3)] (579) 84×[10.8÷(48.6＋5.4)－0.2] (580) (165.8－65.8)×2＋0.91×100 (581) (2.8－2.8×0.7)÷(0.6＋0.52) (582) 90－240÷60×0.5＋40 (583) [(205＋51)×80－20]×0.001 (584) 2.5×(6.4－5.6÷4) (585) (3.12＋0.9)÷[(1－0.4)÷0.1] (586) 0.007＋0.993×4×5×1.8 (587) 1.08÷(3.94＋34.3×0.2) (588) 0.06－0.1×[(1－0.05)÷1.9＋0.1] (589) (9－0.4)×[(6.1－4.6)×0.8－1]÷2.5 (590) [(9＋14÷16)×4.2－6.3]×0.1 (591) 9.258×(36.72－7.2×5.1)÷20 (592) 6.5×6.3×[(10－3.5)÷6.5]÷1.8 (593) [(2.56－1.07)×5＋101.5÷12.5]×0.5 (594) [7.84－2.8×(2.8－1.4)]÷5.6 (595) 25.308÷[7.6×(2.88÷3.2)] (596) 3.01－0.25×0.4÷0.25×0.4 (597) 7.4×8.3－53.01÷9.3－55.32 (598) 27×1.5＋1.5＋72 (599) 49.5×0.2－2.07÷23 (600) 1.42－0.36÷6×0.6计算――递等式计算－25－(601) 0.8×1.38×1.25÷0.46 (602) 72－[(156－56)×35－802]÷38 (603) 1200÷[132－5×()] (604) 3375－[(121－116÷29)×18] (605) [38×(25－18)－24]×37 (606) (100－3)×[100－(100－4)] (607) 37×[36＋(50＋6)÷4] (608) ()÷36＋9) 157－108×9÷972＋156 (610) 7542÷(205×3÷205×3) (611) (786－360)×(174＋434÷14) (612) 2×(44＋56÷28) (613) 8×(280－280÷4) (614) 20－(800－38×3)÷343 (615) 860－272÷16＋24×11 (616) 13.27－(8.45＋1.66) (617) 3.68－0.35＋10.74 (618) 76.25＋83.78－15.06 (619) 25.4＋75.6×0.15 (620) 30.2×2.1－2.1 (621) 37.1×(2.03＋0.17) (622) [9.8＋0.8×(0.9－0.375)]÷0.4 (623) 0.25×(4＋0.8)－0.75 (624) 27.73－(8.4＋10)×0.5 (625) 0.75÷(0.25÷0.3)计算――递等式计算－26－(626) 0.35×[1÷(2.7－2.66)]＋0.65 (627) (2.5－1÷0.8)×0.8－0.8÷1 (628) [13－(1.34＋3.5)÷0.4]×200 (629) 38.4÷0.16－6.8×35＋7.8 (630) 4.35×1.62÷17.4 (631) 0.25×(1.932÷0.15) (632) 4.06×2.9÷8.7 (633) 3.06÷3.4÷0.25 (634) 80.1－47.236＋15.128 (635) 19.26－3.8＋6.2 (636) 9.60＋1.25＋4.07－10.85 (637) 47.64＋28.93－17.28 (638) 2438－38×(14＋56÷28) (639) 724＋57×98－610 (640) 8.06＋4.78＋1.96 (641) 18.05－12.97＋5.92 (642) 10.56＋0.76＋3.4 (643) 47.25＋36.24－18.96 (644) (108÷12)÷(36÷12) (645) 5.68×(1.2－0.34) (646) 4.25－3.62＋17.48 (647) 7.24＋2.3×0.6－1.8 (648) 4.58＋2.37－1.6 (649) 24.5×0.6－0.3×12.25 (650) 4.27－3.6×0.2＋15.8计算――递等式计算－27－(651) 2128÷[(216＋125×8)÷4] (652) [1475－(475＋525)]÷(25×19) (653) 5.64＋36－6.4 (654) 3800÷[1994－(306－248)×18] (655) 3.58＋4.25－6.17 (656) [2.8－2.8×(2.8－2.8)]÷5.6 (657) 62.5÷[(13.8－1.6×8)÷0.16] (658) 36.2×4.2－9.18÷4.5 (659) [8.7＋(14.4－11.04)÷2.8]×0.26 (660) 5.4÷[4.26＋(12.4－1.6)÷45] (661) [(6.4－3.2)×0.21－0.152]÷2.6 (662) (3.72＋14.64)÷(3.8×2.1－4.38) (663) (4＋28.16÷32)×(3－2.85) (664) 35.05÷2.5×4－4.08×2.5 (665) 5.08×3.5＋2.52÷2.4 (666) 8.52＋1.48－8.52＋1.48 (667) 0.22×1.5＋2.144÷3.2－0.99 (668) 100－4.32×15÷12＋5.1÷0.8 (669) (24.68＋7.52)×0.93 (670) 1.38÷0.36×0.6 (671) 6.7＋3.3÷4.4＋5.6 (672) 3.69×[1÷(2.1－2.09)]－0.036 (673) 1.875÷6.25×1.8 (674) [(100－9.1)×0.5＋9.45]÷27.45 (675) (20＋9.744÷2.4)×0.5－1.93计算――递等式计算－28－(676) 12.6×0.4＋0.6÷0.4－0.34 (677) 5.4×6＋5.6÷0.8×1.5 (678) 2.72＋4.9×1.6÷0.8 (679) 45.75÷15×1.4 (680) (38.02＋1.98)×(14.7－14.2) (681) [(3.74－1.8)÷0.4＋0.15]×0.3 (682) 320－6×84÷24 (683) 18.23÷0.5－3.23÷0.5 (684) (1－0.2)×(3－2.68)＋1.2×0.12 (685) (3.12＋0.9)÷[(1－0.8)÷0.1] (686) 32×40－400÷16 (687) 4.5－3.15＋0.5×8 (688) 2×[7＋(6.5－2.3)÷0.7] (689) 388－520÷26×15 (690) 10÷25＋3.5×7 (691) 20.9＋1.05÷(0.53－0.46) (692) 7.21÷3.5－0.18 (693) 200－[0.4＋(0.54＋9.744÷2.4)]÷0.1 (694) 1.25×4÷10－0.56÷5.6 (695) 10.6－(8.4×1.2－1.68)÷4 (696) (4.8－4.8×0.4)÷0.125÷8 (697) [0.37×8＋(1－0.26)]÷0.37 (698) 0.22×1.5×3.232÷3.2 (699) 25.6÷[14.4－(11.04÷2＋2.48)] (700) [60－(9.5＋28.9)]÷0.18计算――递等式计算－29－(701) 20×[(2.44－1.8)÷0.4＋0.15] (702) 777×9＋3) ×6 (704) ()÷7 (705) 671×15－974 (706) 405×() (707) 0.8×[(10－6.76)÷1.2] (708) 19.4×6.1×2.35.67×0.2－0.62 (709) 30.8÷[14－(9.85＋1.07)] (710) 19.4×6.1×2.3 (711) 5.67×0.2－0.62 (712) 0.4×0.7×0.25 (713) 0.78＋5.436＋1 (714) 4.8×5÷4＋1÷4 (715) 9.9x5÷6＋5÷6 (716) 10.3÷4x8÷9－1÷3 (717) 14.31×5÷6－5÷6 (718) 16.5÷9×18－14×2÷7 (719) 20.3×2÷9＋1÷3 (720) 7.2÷0.8－1.2×5 (721) 6.5×(4.8－1.2×4) (722) 28－(3.4＋1.25×2.4) (723) 2.55×7.1＋2.45×7.1 (724) 0.043×24＋0.875 (725) 4.07×0.86＋9.12计算――递等式计算－30－(726) 240×78÷(154－115) (727) ×563 (728) [75－(12＋18)]÷15 (729) 2160÷[(83－79)×18] (730) 280＋840÷24×5 (731) 325÷13×(266－250) (732) 85×(95－1440÷24) (733) 58870÷(105＋20×2) (734) 81432÷(13×52＋78) (735) [37.85－(7.85＋6.4)]×30 (736) 156×[(17.7－7.2)÷3] (737) (947－599)＋76×64 (738) 36×(913－276÷23) (739) [192－(54＋38)]×67 (740) 60－(9.5＋28.9)÷0.18 (741) 2.881÷0.43－0.24×3.5 (742) 0.8×[15.5－(3.21＋5.79)] (743) 3.416÷(0.016×35) (744) (6.8－6.8×0.55)÷8.5 (745) (58＋37)÷(64－9×5) (746) 812－700÷(9＋31×11) (747) 85＋14×(14＋208÷26) (748) 9.72×1.6－18.305÷7 (749) 15－10.75×0.4－5.7 (750) 347＋45×2－4160÷52计算――递等式计算－31－(751) [(7.1－5.6)×0.9－1.15]÷2.5 (752) 5.4÷[2.6×(3.7－2.9)＋0.62] (753) 12×6÷(12－7.2)－6 (754) 3.2×6＋(1.5＋2.5)÷1.6 (755) 120－144÷18＋35 (756) 95÷(64－45) (757) (31.8＋3.2×4)÷5 (758) 31.5×4÷(6＋3) (759) 0.64×25×7.8＋2.2 (760) 2÷2.5＋2.5÷2 (761) 194－64.8÷1.8×0.9 (762) 36.72÷4.25×9.9 (763) 24÷2.4－2.5×0.8 (764) 469×12＋) 19.4×6.1×24 (766) 18.1×0.92＋3.93 (767) 24＋0.875×99 (768) 0.75×102 (769) 31.50＋160÷40 (770) (58＋370)÷(64－45) (771) 34(58＋37)÷(64－9×5) (772) 420＋580－64×21÷28 (773) 37.812－700÷(9＋31×11) (774) (136＋64)×(65－345÷23) (775) 38.85＋14×(14＋208÷26)计算――递等式计算－32－(776) (3.2×1.5＋2.5)÷1.6 (777) 3.2×(1.5＋2.5)÷1.6 (778) 32.120－144÷18＋35 (779) 33.347＋45×2－0) 35.95÷(64－45) (781) 36.178－145÷5×6＋42 (782) (284＋16)×(512－8208÷18) (783) 120－36×4÷18＋35 (784) 0.12×4.8÷0.12×4.8 (785) (23.2×(1.5＋2.5)÷1.6 (786) 45.6－1.6÷4 (787) 5.38＋7.85－5.37 (788) 46.7÷0.8－1.2×5 (789) 6－1.19×3－0.43 (790) 47－6.5×(4.8－1.2×4) (791) (0.123＋123)×) 34×24＋) 0.8×0.196＋0.094 (794) 105＋895×57 (795) 32.47×23＋27 (796) 39.01×18.3－901 (797) 76.5＋2－2×184 (798) 49＋23×14 (799) 12.27＋21÷(7.3－6.6)×2.4 (800) 5.4÷(0.51÷0.17)计算――递等式计算－33－(801) 5.4×(7.26÷6.05) (802) (8.58－3.69)×(3.4－1.8) (803) (13.8－8.7)÷0.034 (804) 1.5×(10.03－15.6÷7.5) (805) 30.6÷(4.5×0.16) (806) 4.7＋3.91÷(32－29.7) (807) 3.12×(0.9＋0.7÷0.1) (808) 9.2＋9.728÷3.2×1.5 (809) 2.4×0.75＋1.25÷2.5 (810) (20.2×0.6－2.12)÷0.1 (811) (1.5×0.9＋3.65)÷2.5 (812) 8.48÷0.8×0.9 (813) 101×0.36÷(14.4×0.05) (814) (25.3－9.7)÷0.3×8.5 (815) 10.5÷(5.1－4.4)＋18.25 (816) 4.11－0.72×(3.38－2.13) (817) ÷4.5×3.6 (818) (6.8－5.4)×2.75－0.9 (819) (12－3.74)÷(8×0.3＋2×1.3) (820) 0.875×36＋4.05÷8.1 (821) (227÷25－4.68)×0.5 (822) 630÷(2.98＋6.5×0.08) (823) (21.88＋29.8)÷7.6 (824) (8.1－5.4)÷3.6＋85.7 (825) (3.44＋20.5×0.32)÷0.16计算――递等式计算－34－(826) 0.54÷(8.7＋45.3)×28.4 (827) 0.1÷1＋1÷0.8－0.1 (828) (1.25＋6.4)－14.88÷2.4 (829) (4.3－2.01＋2.2)÷4 (830) 58.8÷(0.6×0.7)÷0.02 (831) 10.4－7.79÷(0.35＋0.6) (832) 3.6÷(1.2＋0.5)×5 (833) 13.7×0.25－3.7÷4 (834) 3.6×1.25＋0.32÷0.4 (835) 0.8×(3.2－2.99÷2.3) (836) 2.5×(6＋9.728÷3.2) (837) 5.2×(4.6÷0.92×0.04) (838) 5.4÷(3.94＋0.86)×0.8 (839) 19.28＋1.82÷0.7 (840) (1.5÷0.8－1)÷0.4 (841) (37.62＋20.76)÷0.042 (842) (17.2－4.5×3.6)÷0.32 (843) (6.02＋2.8)÷0.4－2.05 (844) 3.27×(80.5－9.84÷0.16) (845) (71.2－71.2×0.9)÷0.25 (846) (4.25－4.25×0.8)÷1.7 (847) 1.46×5＋12.8÷0.4×7.5 (848) 1.52－1.6×5＋5.7 (849) 3.8＋(24－25×0.6) (850) (0.25＋0.125)÷(0.75×0.4)计算――递等式计算－35－(851) 20－2.5×4÷8 (852) (4.8－4.8×0.5)÷2 (853) 0.8×(10.4＋0.64)÷0.92 (854) (25.3－9.7)÷0.3×7.6 (855) (4.5＋1.3×6)÷1.5 (856) 0.4×(3.2－0.8)÷1.2 (857) 16.78－1.6×1.5÷0.8 (858) (53.73－17.49)×(2.6＋12.4) (859) 18.64－4.35×2＋20.9 (860) 80－8.2×(10－7.6) (861) (9－8.5)×(5－4.76)÷0.1 (862) 1.6＋8.4×1.5÷0.18 (863) (1.1－0.78)×(2.7－1.95) (864) (20.2×0.6－2.8]÷0.4 (865) 0.06×(10.14－0.64)÷2 (866) 17.68÷5.2＋2.7×1.5 (867) 19.8＋(3.749－0.299)÷2.3 (868) 8.6＋15.4÷0.4×1.4 (869) 1.5×1.2－0.6÷2.4 (870) 0.6×(6.25÷2.5＋0.25) (871) 4.32×15÷12＋5.1÷0.85 (872) 5.6×(12.5－8.5÷0.85) (873) 8.74－8.74÷23＋700×0.03 (874) 0.38＋9.62÷3.7×5.4 (875) 4.38÷(36.94＋34.3×0.2)计算――递等式计算－36－(876) (5.84－3.9)÷0.4＋0.15 (877) 1.6×(2.25＋27.75÷1.5) (878) 2.02×1.027÷0.26) (879) 6.5×(10－3.7)＋2.98 (880) 4.75＋8.4÷(9.2－6.8) (881) 4.5×(0.75－0.356)＋9.23 (882) 5.4＋(0.63＋1.29÷0.23) (883) 2.98＋6.5×(3.2－3.12) (884) (15.6－2.4)×0.8＋4.32 (885) 1÷0.25×(1.28÷3.2) (886) 4.78＋0.22×20÷16 (887) 31.7－0.5×0.7－1.65 (888) 10－7.5×(6.4－5.9) (889) (2.95＋10.58－1.53)÷0.25 (890) 4.2×(6.18－3.03)＋6.3 (891) 2.7÷4＋6.3×0.25 (892) 56.29＋75.76－24.24 (893) 36.84－(13.47－6.4)×1.5 (894) 4.25×1.02÷0.3－7.26 (895) 3.75÷0.25＋6.25÷0.25 (896) 5.67÷0.3＋0.7×5.1 (897) 6.42÷[5.6－1.2×(2.4－1.3)] (898) 7.25＋3.75÷0.3 (899) 19.52－27.2÷16×5.6＋1.9 (900) 69.54－2.3×3.2＋30.6÷6.8计算――递等式计算－37－(901) [(8.28－3.85－4.15×0.5)＋1.25]×8 (902) 2.3－0.3×1.9－0.9 (903) 23.2÷1.6－3.2×1.6 (904) [6.9－(1.6＋2.4÷0.6)]×0.01 (905) (0.56×0.9÷0.56×0.9)÷0.01 (906) (14.4－4.8＋3)÷0.4 (907) [58.8÷(6×0.07)＋1.5]×0.4 (908) 7.58×5.6－8.03×3.8 (909) 50÷40－40÷50＋0.45 (910) 13.5×[1.5×(1.07＋1.93)] (911) 1.5×[(3.6－0.36÷0.6)＋5] (912) 7.2－1.2×[0.01÷(1－0.9)] (913) 12.8＋7.2÷4×2.5 (914) 18.5＋(8.41－4.41)÷2.5×4 (915) 72÷[0.5＋(10－6.7)÷11] (916) [9.8－9.8×(9.8－9.8)]÷(9.8÷10) (917) (3.28＋6.73)÷(2－1.89) (918) 10.5×(4－3.2)÷2.4 (919) 12.5＋8÷4×2.5 (920) 2.5－2.5×0.02＋0.02 (921) 5.04＋0.96÷(7.5－4.3) (922) 12.5×0.8÷2.5×4 (923) 3.75×1.6－11.25÷4.5 (924) 3.52÷[(20.5－9.5)×0.4]＋6 (925) 22.4÷0.8×1.25计算――递等式计算－38－(926) 4.8－4.8÷1.5 (927) 18.6×5.8÷0.6 (928) 12.4－25.3÷5.5＋7.6 (929) 3.25×0.8＋6.75÷1.5 (930) 12.75÷[14.6－(1.3＋8.2)] (931) 10.64＋7.65×2.4＋11.76 (932) 15.4÷[8×(6.34－4.59)] (933) 200＋144÷(16×3) (934) 45×[(153－63)÷18] (935) 20－1.28＋8.72 (936) 36×5÷36×5 (937) 7200÷[270－6×(27＋13)] (938) 100－870÷29－87 (939) 15÷7.5＋5.6－6.6 (940) 2×(4.8＋3.2÷4－5.6) (941) [8＋(5－2)÷1.2]×4 (942) 10.8×2.7－3.15÷0.5 (943) [7.8－7.8×(7.8－7.8)]÷1.56 (944) (10＋9.744÷2.4)×40.5－12.3 (945) 4.42－4.42÷2.6＋0.16×1.5 (946) 54÷4.5－1.5×0.9 (947) 9.8－(4.2×0.6－0.084)÷2.1 (948) (2.8－2.8×0.7)÷0.6 (949) 17.22÷2.1－3.5×2 (950) 630÷[2.98＋6.5×(3.2－3.12)]计算――递等式计算－39－(951) (7.7＋15.4)÷0.7 (952) 12.6－(2.89＋7.11)×1.01 (953) 25.5＋[(10－8.98)×2.5] (954) [18.95－(8.43＋3.87)]×2.8 (955) 5.4×0.75＋1.5 (956) (7.7＋1.54)÷0.7 (957) 4.25÷2.5×9.9＋0.17 (958) 2.3＋3.91÷(22－19.7) (959) (1－0.2)×[13－(3.12＋5.28)] (960) 4.25－3.64＋7.82 (961) 15.24×0.63÷0.07 (962) 2.42×5.1－4.342 (963) 1.28×34－2.7÷0.3 (964) 1.4×[2.78－1.4×(5.4－4.6)] (965) (12.3＋23.1＋31.2)÷0.6 (966) 0.44×0.22÷0.55 (967) 3.6×6.4－2.5×5.2 (968) 10.4－9.6×0.35 (969) (4.23＋6.17)×0.8 (970) 2.31×1.2×0.5 (971) (0.83＋1.2)×0.8 (972) 3.9×3－1.2×2.5 (973) 60.5＋3.1×3－20÷0.4 (974) 25.16÷3.7－0.68 (975) (3.6＋10)×0.5＋9.23计算――递等式计算－40－(976) 4.02÷[(1－0.8)÷0.1] (977) (0.3－0.3×0.3)÷0.3＋0.3 (978) 30.06＋87.5÷1.25 (979) 18.23÷0.5－3.23×0.3 (980) 0.1÷0.001×(100.1－1.001) (981) (0.1－0.1×0.1)÷0.1＋0.1 (982) 4.5－4.5÷3－5×0.2 (983) (1.6＋3.6÷9)＋0.15 (984) 28.52－28.52÷9.2 (985) 1.8＋(10.1－1.91)÷0.3 (986) (1.9－1.9×0.3)÷(6.8－5.8) (987) 70.6－35×1.7＋13.5÷5 (988) 5.72＋3.2＋1.28 (989) 0.25×(5.86－0.85) (990) 4.3×4.7＋4.3×4.3＋4.3 (991) 33.02－(148.4－90.85)÷2.5 (992) 67.45－[33.3－(17.4＋3.1)]×3.05 (993) 180－180÷12×5＋30 (994) 50×[50×(22＋29)－880] (995) [4800＋(560－40×4)]÷25×4 (996) (6)×21÷45 (997) 24×(68＋32÷32＋68) (998) [(440＋1060)÷25÷4]×31 (999) 585÷39×0÷14＋39×1＋1 (÷(44＋225÷5)计算――递等式计算－41－(×(4.3＋3.6) (×4.3＋5.7 (1003) (6.8＋2.3)×(6.8－2.3) (÷3.2÷0.4 (÷(73.61－68.01) (×(3.64÷2.6) (1007) (3.4＋4.3)÷2.5 (1008) (4.5＋0.45)÷(0.1－0.1×0.1) (5÷1.5－0.15＋0.5 (1010) [2.86＋(33.8－1.74÷0.6)]×0.7 (.8÷3.4＋10.2÷0.5 (÷[7.5×(2.56÷3.2)] (÷(45.356＋7.644)×0.01 (＋16÷0.8－0.15 (1015) [(27－0.5)＋1.5×0.5]÷1.7 (1016) [(30.4－9.85)×1.6－2.72]÷104 (－0.35＋1÷20 (÷0.15×(16.8－9.54) (1019) (101×10.1－10.1)÷1.01 (－[(1－0.63÷0.7)×0.1＋0.1] (1021) [313.5÷25－(1.9＋0.65)]×2.3 (×0.7－0.09 (×5＋90.9 (×0.12×30 (1025) (2.72＋1.8)×7.2×0.1计算――递等式计算－42－(1026) (7.83－6.125－0.875)×50 (1027) (2.58×0.05＋0.95)×70 (1028) (0.52×60＋7.8)－0.018 (×12.5＋8 (÷12×3.5 (＋0.21 (÷37＋63 (÷45×(1－0.9) (×0.8＋0.4×0.8 (＋4.5÷0.9－2.671 (×[1÷(2.1－2.09)] (÷[(1－0.91)×0.4＋0.014] (1038) [1.9－1.9×(1.9－1.9)＋0.9]×95 (1039) (10.08－0.036×50)＋7÷4 (×[6.8－(1.6＋3.6÷0.9)]÷8.4 (1041) (8.4－5.9)×(9.2－9.2×0.6) (×[0.3＋0.76÷(10.05－9.8)] (÷[(5.1－4.6)×0.8－0.3] (－7.5÷[(17.2－4.5×3.6)÷0.4] (1045) 25×(3.6÷0.6＋6.4÷1.6) (×(11.08－15.6÷2.5) (－110÷25×1.5 (×[1÷(2.1－2.09)]＋12.6 (＋2.24÷(8.27－7.15) (1050) 10－(4.2＋4.3)÷2.5＋0.8计算――递等式计算－43－(×1.5＋2.144÷3.2－0.99 (×3.05÷6.1 (÷0.78×1.5 (÷[(27.6＋6.4)×25] (1055) 10×[12.7－(3.06÷0.75＋3.6×0.38)] (1056) [(27－0.5)＋1.5×5]÷1.7 (＋[(30.4－9.85)×1.6－2.72] (＋9.6－8.7＋7.3＋2.1 (×(11.03－15.6÷7.5) (＋95.76－[100－(10－0.92)] (＋7.6×4－0.8 (－1.76÷0.8×1.25 (1063) (0.8×0.6＋1.2)÷0.25 (＋0.75×(4－2.6) (×1.5÷2.64×1.5 (1066) (1－0.5)×(4－3.65)÷0.01 (1067) (1－0.01)÷0.9×(1＋0.1) (1068) [0.35＋(3.74－1.8)÷0.4]×0.28 (÷[(437＋563)×(1－0.97)] (1070) (12－7)÷(48－516÷12) (－32×16÷4 (＋9.7×7 (＋9.7×7 (×7.4＋7.8×8.4 (×3.9＋6.1计算――递等式计算－44－(÷(5.7＋0.8)×200 (÷(5.7＋11.2)×200 (×4－6.4÷0.32 (1079) 16÷[(12.6－5.4)×0.4－1.28] (1080) (12－7.5)÷(4.8×0.5) (1081) [3.7－3.7×(3.7－3.7)]÷3.7 (1082) [37.58－(4.6＋10)×0.5]÷60.56 (×0.8÷1.6×0.8 (－540÷(3.2＋2.8) (－5.5×5.5＋4.5×5.5 (÷(12.5×4－18) (－1.4×5.5＋4.5×1.4 (1088) 6×[(2.4＋0.8)÷0.25]－2.6 (.2×2.8＋3.5 (＋0.3×92 (1091) [10－(0.45＋1.1×0.5)]×3.27 (－62.5÷[(17.2－9×1.8)÷0.16] (1093) 16÷[(8－7.98)×0.4]÷2.5×4.02 (1094) [(5＋14.72÷32)×2.5－8.4]×5.7 (1095) [412.5÷25－(3.8＋3.75)]×(4.78＋5.24) (.8－1.28＋3.72 (－0.48×7.5＋3.87 (×(46.4－56×0.24) (＋6.5÷5 (1100) [1.9＋(4.2－0.529÷0.23)]÷0.1计算――递等式计算－45－(1101) (56.14－56.14÷14)×2.2 (×[723.6÷15－(41.47－38.23)] (＋6.2÷0.31－10.6 (－1.25×0.8÷1.25×0.8 (－20÷2.5×4＋92 (1106) (4－3.2)÷0.4－0.6×0.2 (1107) [2.25＋(3.92－1.42)]×0.6 (＋11.6÷0.1－9.4×1.85 (÷[(3.75－1.5)×0.4]－0.12 (－26.15×[(4.6＋0.)] (×1.5＋2.144÷3.2－2.97 (÷(16.74＋9.744÷2.4)×0.25 (÷0.25×4÷0.12×1.25 (＋(6.05－3.35)÷1.5×0.9 (1115) 48×[(17.2－9×1.8)÷0.16] (1116) (3÷0.75－0.75÷3)×0.4－0.2 (÷[12.48－0.7×(5.12÷0.8)] (1118) [9.2－2.8×(6.4－5.4)]÷0.32＋15 (1119) (8.23－5)×7.2＋9.35 (1120) (27－0.5＋1.5×5)÷1.7 (1121) ()÷(73.4＋7.08) (×0.75÷1.5 (1123) [18.95－(8.43＋3.87)]×2.8 (÷[(10－8.98)×2.5] (×(6.2－2.6)×0.4计算――递等式计算－46－(－(2.89＋7.11)×1.01 (1127) (7.7＋15.4)÷7 (÷4＋0.6÷4 (÷5＋2.17÷5 (－0.5×5－7.5 (＋2.78＋51.6－0.48 (－3.1＋0.85－6.17 (1133) (1.9－1.9×0.9)÷(3.8－2.8) (÷[2.98＋6.5×(3.2－3.12)] (＋3.91÷(22－19.7) (1136) (1－0.2)×[13－(3.12＋5.28)]}