1 2 3 4 5 6 7 8=78 填入符号在下面式子等号左边的适当的位置填入＋－× ÷（各运算符号只能用一次）,是等式成立1 2 3 4 5 6 7 8=78 填入符号比如1和2之间不加符号可以变成12
浮生若梦丶覢
(12÷3-4)*56+78=78
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其他类似问题
能具体点么，有七个空，只有4个运算符号，还只用一次，怎么填啊
只能用加减乘除，没说用括号，还称得上什么满意回答，我呸！
(-1+2*3*4+5)+6*7+8(-1+2)*3*4*5/6*7+81-2-3-4+5*6+7*8
扫描下载二维码常用英文数学式/符号的读法--admin　blog
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常用英文数学式/符号的读法
作者:swan 日期: 11:49:00
Pronunciation of Numerals 数词的读法 ---------------------------------------------------------------------- 1.Cardinals and Ordinals 基数和序数 (1)100以内的数词 基数 序数 Roman Arabic Numerals Numerals
阿拉伯数字
the second
the fourth
the seventh
the eighth
the eleventh
the twelfth
the thirteenth
the fourteenth
the fifteenth
the sixteenth
the seventeenth
the eighteenth
the nineteenth
the twentieth
twenty-one
the twenty-first
twenty-five
the twenty-fifth
the thirtieth
the fortieth
the fiftieth
the sixtieth
the seventieth
the eightieth
the ninetieth
ninety-nine
the ninety-ninth
one hundred
the hundredth
a hundred and two
the (one) hundred and second
DCCCLXXXVIII
MMMDCCCLXXXVIII
[附注]拼写规则
罗马数字共有7个，即I(1)，V(5)，X(10)，L(50)，C(100)，D(500)，M(1000)。按照下述的规则可以表示任意正整数。
重复数次：1个罗马数字重复几次，就表示这个数的几倍。
右加左减：
在一个较大的罗马数字的右边记上一个较小的罗马数字，表示大数字加小数字。
在一个较大的罗马数字的左边记上一个较小的罗马数字，表示大数字减小数字。
但是，左减不能跨越一个位数。比如，99不可以用IC表示，而是用XCIX表示。（等同于阿拉伯数字每位数字分别表示）
例如：999 = 900+90+9 = CM+XC+IX = CMXCIX
此外，左减数字不能超过1位，比如8写成VIII，而非IIX。
同理，右加数字不能超过3位，比如14写成XIV，而非XIIII。
加线乘千：在1个罗马数字的上方加上1条横线或者在右下方写M，表示将这个数乘以1000，即是原数的1000倍。
同理，如果上方有2条横线，即是原数的1000000倍。
例外：由于IV是古罗马神话主神朱庇特（IVPITER，古罗马字母没有J和U）的首字，因此有时用IIII代替IV。
(2)1000以上的数词 1,000 = one thousand 一千 10,000 = ten thousand 一万 100,000 = one hundred thousand 十万 1,000,000 = one million 一百万 10,000,000 = ten million 一千万 100,000,000=one hundred million 一亿 (3)十亿以上的大数，英美有不同的读法： 英国 美国 十亿 one thousand million = one billion 百亿 ten thousand million = ten billion 千亿 one hundred thousand million = one hundred billion 万亿 one billion = one trillion 2.Fractions 分数 通常将分子读为基数，将分母读为序数。 1/2 = a (or one) half 1/3 = a (or one) third 1/4 = a quarter or one fouth 1/5 = a (or one) fifth 2/3 = two thirds 9/10 = nine tenths 53/4 = five and three quarters 15/64= fifteen over (or by) sixty-four 15% = fifteen per cent 4‰ = four per mill 3.Decimals 小数 0.4 = zero (or nought) point four .01 = point (or decimal) nought one 12.34 = twelve point three four 567.809 = five hundred and sixty-seven point eight nought nine 30.45 = thirty point four five, five recurring 0.3% = decimal three percent 4.Mathematic Forms 数学式 (1) Addition 加法 1+2=3 One and two are three. 2+3=5 Two plus three equals five. 4+0=4 Four and nought is equal to four. 45+70+152=267 45,70 and 152 added are (or make) 267 the sum (or total) is 267. 演算时的读法： Thr I write(or I write down,or I put down)a nought and carry one. Four and one that I carry are five, and eight make thirteen,and three
I write down six and carry one. One and one (that I carry) I put down two.- The sum (or total, or the result of the addition) is two hundred and sixty. 37,80 and 143 added together, and(or make) 260. (2)Subtraction 减法 9-4=5 Nine minus four equals (or is equal to) five. 15-7=8 Seven from fifteen leaves eight. 23,654-8,175=15,479 8,175 (take or subtracted) from 23,654 leaves 15,479. The difference (or The remainder) is 15,479. Nine from five won`t go. 演算时的读法：Nought from nought (leaves) nought. One from one leaves nought (or nothing). Two from three (leaves) one. I can`t take (or subtract) I five from fourteen leaves nine.- The difference (or The remainder) is nine thousand one hundred. 5210 (take or substracted) from 14,310 leaves 9,100. (3)Multiplication 乘法 1×0=0 One multiplied by nought equals nought. 1×1=1 Once one is one. 2×1=2 Twice one is two. 3×5=15 Three times five is fifteen 6×0=0 Multiply six by nothing, and the result is nothing. 演算时的读法: Five times nine (or Nine multiplied by five) are forty- I put down five and carry four. Five times seven are thirty-five and four (that I carry) are thirty- I write down nine and carry three. Five times six make thirty and three (that I carry) thirty- I put down thirty-three. Eight times nine (or Eight nine) I write two and carry seven. Eight sevens make fifty-six and seven are sixty-three. I put down three and carry six. Eight sixes make forty-eight and six fifty- I write down fifty-four. I now add the partial results (or products) Five. Two and nine are eleven. Three and three are six and one are seven. Four and three make seven. Five. (4)Division 除法 9÷3=3 Nine divided by three maks (or is equal to) three. 20÷5=4 Five into twenty goes four times. 余13 23 into 4567 goes 198 times, and 13 remainder. The quctient is 198, and 13 remainder. 演算时的读法: Fifteen into thirteen won` fifteen into one hundred and thirty-eight goes nine
nine times fifteen are one hundred and threty- one hundred and thirty-five from one hundred and thirty- I fifteen into thirty- twice fifteen
thirty from thirty-seven leaves seven. The (exact) quotient is ninety-two, 15 into 1387 goes 92 times, and 7 remainder. 5.Time 时间 (1)Hours 钟点 2h.5'8" = two hours five minutes eight seconds 2小时5分8秒 6.18 = six eighteen 6时18分 8.30 a.m.= eight thirty a.m.['ei 'em] 上午8时30分 the 6.05 p.m.train = the six (nought) five p.m.['pi:'em] train 下午6时零5分列车 又二十四小时混合制的写法和读法如下： 0900 = 0 nine hunderd (上午)9时 0910 = 0 nine ten (上午)9时10分 1300 = thirteen hundred 13时(下午1时) 1525 = fifteen twenty-five 15时25分(下午3时25分) 2000 = twenty hundred 20时(下午8时) at 5 o'c =at five o'clock 五点钟 (2)Date 日期 Oct.1 =October first 10月1日 Oct.1st = October the first 10月1日 Ist Oct. 1949 = teh first of October, nineteen forty-nine 日 3/5 = [英]May (the) third 5月3日；[美]March fifth 3月5日 [附注]联系日期前置词用on. (3)Year 年份 684 B.C. =Six eighty-four B.C. ['bi:'si:] 公元前684年 1960 = nineteen hundred and sixty 19- nineteen something 1950's nineteen fifties 二十世纪五十年代 [附注]联系年份的前置词用in. 6.Numbers 号码 (1)Telephones Numbers　电话号码 1023 = one O ten twenty-three 1227 = one double two (or two two) seven 0386 = O three eight six 0096 = double O(or O O )nine six 7000 = seven O double O = seven thousand No.26= Number 26 第26号 Room 201 = Room two O one 第201房间 10 Changan Street = Ten Changan Street 长安街10号 (2)Writings 书籍作品 Vol.I = Volume one (or the first volume) 卷一 Chap.II= Chapter two (or the second chapter) 第2章 Page 3 = page Three (or the third page) 第3页 See pp.5-10 = See Pages five to ten 见第5-10页 Act V = Act five (or the fifth act) 第5幕 Hamlet III 1:56 = Hamlet Act Three, Secene One.Line fifty-six 《哈姆雷特》第3幕第一场第56行 Matt.7:12 = Matthew, Chapter Seven, Verse Twelve 《马可福音》第七章第12节 Beethoven Op.49 = Beethoven Opus forty-nine 贝多芬作品第49号 4to = quarto 四本开 8vo = octavo 八本开 (3)Other 其他 World War I = World War One 第一次世界大战 World War II = World War Two 第二次世界大战 Charles I= Charles the First 查理一世 Henry V = Henry the Fifth 亨利五世 Mr.- = Mr. D Mr. So-and-so 某某先生 Mr.B - = Mr. B -Esq.,of -= the town of Blank Esquire of Blank University 某大学某某先生 the town of = the town of Blank 某某城 The result of the game was 3-0 比赛结果是三比零。
7.Money 货币 (1)British currency 英币 6d. = six pence 六便士 1/2d. = a halfpenny 半便士 11/2d. = a peney halfpenny or three halfpeny or three halfpence一便士半 1/4d. = a farthing 一个铜元 33/4d.= three pence three farghings 三便士三铜元 1s.6d.(or 1/6) = one (shilling) and six (pence) 一先令六便士 ￡1.18 = (or￡1.18s.)= one pound eighteen (shillings) 一镑十八先令 ￡1.3s.6d. = one pound, three shillings (and) sixpence 4/51/2(or4s.51/2d.) = four (shillings) and five pence halfpenny (2)U.S. currency 1.20 dollar (and) twenty (cents) 美金一元二角 4.25 = four dollars twenty-five cents 美金四元二角五分 (3)Soviet currency 前苏联币 6 Rb. 15 = six roubles fifteen kopecks 六卢布十五戈比 (4) German currency 德币 1 m. 60 = one mark sixty pfennig -马克六十芬尼 (5)French currency 法国币 1 fr.30 = one franc. thirty (centimes) -法郎三十生丁 0 fr.15 = fifteen centimes 十五生丁 (6) Chinese People's Currency 人民币 1.50 = one yuan and a half 一元五角 JMP 10.35 = JMP ten yuan thirty-five (fen) 人民币十元三角五分 附注：yuan单复数没有变化：也可作为日本本位币“圆”的符号。 8. Weight and Measures 度量衡 (1)length,area, and volume 长度、面积和容积 3 in = three inches 三英寸 15 ft.5 in = fifteen foot five (inches) 十五英尺五英寸 [附注] 尤其在inches省略时, ft.读作如果inches也念出来，ft可以读作fett. 18'6 5/1"= eighteen foot six and a fifth (inches) 10×8feet= ten by eight feet 十英尺长，八英尺宽 5"×4×31/2 = five inches by four by three and a half 长五英寸，宽四英寸，高三英寸半 [附注] 以上二例中，乘号×表示面积或容积。 (2)Weight 重量 12 dr. 23 gr.= Twelve drams twenty-three grains 十二打兰二十三喱 10 oz. 4 dr. = Ten ounces four drams 十盎司打兰 (3)Capacity 容量 3 gi. = three gills 三及耳 1 qt. 1 pt = one quart one pint 一夸脱一品脱 [附注] qt.,pt. 的复数是qts.,pts.,也可以不加s. 20 gal. 5 qt. =Twenty gallons five quarts 二十加仑五夸脱 5 bu. 3 pk. = Five bushels three pecks 五蒲式耳三配克
符号的英文读法 ． period 句号 ≈ is approximately equal to 约等于号 ， comma 逗号 ＜ is less than 小于号 ： colon 冒号 ＞ is more than 大于号 ； semicolon 分号 ≮ is not less than 不小于号 ！ exclamation 惊叹号 ≯ is not more than 不大于号 ？ question mark 问号 ≤ is less than or equal to 小于或等于号 ￣ hyphen 连字符 ≥ is more than or equal to 大于或等于号 ' apostrophe 省略号 ；所有格符号 ％ per cent 百分之… - dash 破折号 ‰ per mill 千分之… ' ' single quotation marks 单引号 ∞ infinity 无限大号 double quotation marks 双引号 ∝ varies as 与…成比例 ( ) parentheses 圆括号 √ (square) root 平方根 [ ] square brackets 方括号 ∵ because 因为 《 》 French quotes 法文引号;书名号 ∴ hence 所以 ... ellipsis 省略号 ∷ equals, as (proportion) 等于，成比例 ¨ tandem colon 双点号 ∠ angle 角 ditto 双点号 ⌒ semicircle 半圆 ‖ parallel 双线号 ⊙ circle 圆 ／ virgule 斜线号 ○ circumference 圆周 ＆ ampersand = and π pi 圆周率 ～ swung dash 代字号 △ triangle 三角形 § division 分节号 ⊥ perpendicular to 垂直于 → arrow 箭号；参见号 ∪ union of 并，合集 ＋ plus 加号；正号 ∩ intersection of 交，通集 － minus 减号；负号 ∫ the integral of …的积分 ± plus or minus 正负号 ( ∑ sigma) summation of 总和 × is multiplied by 乘号 ° degree 度 ÷ is divided by 除号 ′ minute 分 ＝ is equal to 等于号 ″ second 秒 ≠ is not equal to 不等于号 ＃ number …号 ≡ is equivalent to 全等于号 ℃ Celsius system 摄氏度 ≌ is equal to or approximately equal to 等于或约等于号 ＠ at 单价
R’ R prime R” R double prime, R second prime R1 R sub one 100° C one hundred degrees Centigrade + positive - negative ′ times ? divided by ± plus or minus = equals o is identically equal to ? is approximately equal to ( ) parentheses [ ] square brackets { } braces a＞＞b a is much greater than b a3 b a is greater than or equal to b aμ b a varies directly as b lognX logX to the base n the cubic root of x the nth root of x x2 x square, x squared, the square of x Xn X x to the power n x -8 x to the minus eighth power ? x? the absolute value of x the mean value of X the sum of summation of D x or d x the increment of x dx differential x dy/dx the first derivative of y with respect to x ò integral ￥ infinity 1/2 one half 2/3 two thirds 5/123 five over a hundred and twenty-three eight an eight and three quarters 0.01 O point O nought point nought one 6 % 6 percent 3‰ 3 per mille 2 : 3 the ratio of two to three r=xd r equals x multiplied by d 5′ 2=10 five times two equals ten x3/8=y2 x raised to the third power divided by eight equals y squared (a+b-c′ d)/e=f a plus b minus c multiplied by d, all divided by e equals f y = (Wt-W)/x y equals W sub t minus W over x
幂次方通常用power表示.例如:10的7次方:the&seventh&power&of&ten或ten&to&the&seventh&power.任何一个数都可以表示成X乘以10的Y次方,即X&times&the&Yth(或根据情况改为nd,&rd)&power&of&ten.&& a的平方：a&square&or&a&squared&&& a的立方：a&cube&or&b&cubed&&& a的4次方：a&to&the&fourth&&& a的-1次方：a&to&the&minus&one&&& log&a:&common&logarithm&&& ln&a:&natural&logarithm&&& f(a):&the&function&of&a&&& |a|:&the&absolute&value&of&a&&& sin:&sine&&& cos:&cosine&&& tan:&tangent&&& ctg:&cotangent&&& sec:&secant&&& csc:&cosecant&&& n!:&the&factorial&of&n&公理&axiom&定理&theorem&计算&calculation&运算&operation&证明&prove&假设&hypothesis,&hypotheses(pl.)&命题&proposition&算术&arithmetic&加&plus(prep.),&add(v.),&addition(n.)&被加数&augend,&summand&加数&addend&和&sum&减&minus(prep.),&subtract(v.),&subtraction(n.)&被减数&minuend&减数&subtrahend&差&remainder&乘&times(prep.),&multiply(v.),&multiplication(n.)&被乘数&multiplicand,&faciend&乘数&multiplicator&积&product&除&divided&by(prep.),&divide(v.),&division(n.)&被除数&dividend&除数&divisor&商&quotient&等于&equals,&is&equal&to,&is&equivalent&to&大于&is&greater&than&小于&is&lesser&than&大于等于&is&equal&or&greater&than&小于等于&is&equal&or&lesser&than&运算符&operator&数字&digit&数&number&自然数&natural&number&整数&integer&小数&decimal&小数点&decimal&point&分数&fraction&分子&numerator&分母&denominator&比&ratio&正&positive&负&negative&零&null,&zero,&nought,&nil&十进制&decimal&system&二进制&binary&system&十六进制&hexadecimal&system&权&weight,&significance&进位&carry&截尾&truncation&四舍五入&round&下舍入&round&down&上舍入&round&up&有效数字&significant&digit&无效数字&insignificant&digit&代数&algebra&公式&formula,&formulae(pl.)&单项式&monomial&多项式&polynomial,&multinomial&系数&coefficient&未知数&unknown,&x-factor,&y-factor,&z-factor&等式，方程式&equation&一次方程&simple&equation&二次方程&quadratic&equation&三次方程&cubic&equation&四次方程&quartic&equation&不等式&inequation&阶乘&factorial&对数&logarithm&指数，幂&exponent&乘方&power&二次方，平方&square&三次方，立方&cube&四次方&the&power&of&four,&the&fourth&power&n次方&the&power&of&n,&the&nth&power&开方&evolution,&extraction&二次方根，平方根&square&root&三次方根，立方根&cube&root&四次方根&the&root&of&four,&the&fourth&root&n次方根&the&root&of&n,&the&nth&root&集合&aggregate&元素&element&空集&void&子集&subset&交集&intersection&并集&union&补集&complement&映射&mapping&函数&function&定义域&domain,&field&of&definition&值域&range&常量&constant&变量&variable&单调性&monotonicity&奇偶性&parity&周期性&periodicity&图象&image&数列，级数&series&微积分&calculus&微分&differential&导数&derivative&极限&limit&无穷大&infinite(a.)&infinity(n.)&无穷小&infinitesimal&积分&integral&定积分&definite&integral&不定积分&indefinite&integral&有理数&rational&number&无理数&irrational&number&实数&real&number&虚数&imaginary&number&复数&complex&number&矩阵&matrix&行列式&determinant&几何&geometry&点&point&线&line&面&plane&体&solid&线段&segment&射线&radial&平行&parallel&相交&intersect&角&angle&角度&degree&弧度&radian&锐角&acute&angle&直角&right&angle&钝角&obtuse&angle&平角&straight&angle&周角&perigon&底&base&边&side&高&height&三角形&triangle&锐角三角形&acute&triangle&直角三角形&right&triangle&直角边&leg&斜边&hypotenuse&勾股定理&Pythagorean&theorem&钝角三角形&obtuse&triangle&不等边三角形&scalene&triangle&等腰三角形&isosceles&triangle&等边三角形&equilateral&triangle&四边形&quadrilateral&平行四边形&parallelogram&矩形&rectangle&长&length&宽&width&菱形&rhomb,&rhombus,&rhombi(pl.),&diamond&正方形&square&梯形&trapezoid&直角梯形&right&trapezoid&等腰梯形&isosceles&trapezoid&五边形&pentagon&六边形&hexagon&七边形&heptagon&八边形&octagon&九边形&enneagon&十边形&decagon&十一边形&hendecagon&十二边形&dodecagon&多边形&polygon&正多边形&equilateral&polygon&圆&circle&圆心&centre(BrE),&center(AmE)&半径&radius&直径&diameter&圆周率&pi&弧&arc&半圆&semicircle&扇形&sector&环&ring&椭圆&ellipse&圆周&circumference&周长&perimeter&面积&area&轨迹&locus,&loca(pl.)&相似&similar&全等&congruent&四面体&tetrahedron&五面体&pentahedron&六面体&hexahedron&平行六面体&parallelepiped&立方体&cube&七面体&heptahedron&八面体&octahedron&九面体&enneahedron&十面体&decahedron&十一面体&hendecahedron&十二面体&dodecahedron&二十面体&icosahedron&多面体&polyhedron&棱锥&pyramid&棱柱&prism&棱台&frustum&of&a&prism&旋转&rotation&轴&axis&圆锥&cone&圆柱&cylinder&圆台&frustum&of&a&cone&球&sphere&半球&hemisphere&底面&undersurface&表面积&surface&area&体积&volume&空间&space&坐标系&coordinates&坐标轴&x-axis,&y-axis,&z-axis&横坐标&x-coordinate&纵坐标&y-coordinate&原点&origin&双曲线&hyperbola&抛物线&parabola&三角&trigonometry&正弦&sine&余弦&cosine&正切&tangent&余切&cotangent&正割&secant&余割&cosecant&反正弦&arc&sine&反余弦&arc&cosine&反正切&arc&tangent&反余切&arc&cotangent&反正割&arc&secant&反余割&arc&cosecant&相位&phase&周期&period&振幅&amplitude&内心&incentre(BrE),&incenter(AmE)&外心&excentre(BrE),&excenter(AmE)&旁心&escentre(BrE),&escenter(AmE)&垂心&orthocentre(BrE),&orthocenter(AmE)&重心&barycentre(BrE),&barycenter(AmE)&内切圆&inscribed&circle&外切圆&circumcircle&统计&statistics&平均数&average&加权平均数&weighted&average&方差&variance&标准差&root-mean-square&deviation,&standard&deviation&比例&propotion&百分比&percent&百分点&percentage&百分位数&percentile&排列&permutation&组合&combination&概率，或然率&probability&分布&distribution&正态分布&normal&distribution&非正态分布&abnormal&distribution&图表&graph&条形统计图&bar&graph&柱形统计图&histogram&折线统计图&broken&line&graph&曲线统计图&curve&diagram&扇形统计图&pie&diagram&
Re:常用英文数学式/符号的读法
作者:妮妮(游客) 日期: 15:06:23
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