常用英文数学式/符号的读法(三)
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    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 nought1 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: Three and seven are ten; 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

  sixteen; I write down six and carry one. One and one (that I carry) are two; 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 remainder2) 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) five from four; I must borrow ten;

  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-five; I put down five

  and carry four. Five times seven are thirty-five and four (that I carry) are thirty-nine; I write

  down nine and carry three. Five times six make thirty and three (that I carry) thirty-three; I put

  down thirty-three.

  Eight times nine (or Eight nine) are seven two; 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-four; 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.

  4567÷23=198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`t go ; fifteen into one hundred and thirty-eight goes nine

  times; nine times fifteen are one hundred and threty-five; one hundred and thirty-five from one hundred

  and thirty-eight leaves three; I bring down seven; fifteen into thirty-seven goes twice; twice fifteen

  are thirty; thirty from thirty-seven leaves seven.

        The (exact) quotient is ninety-two, and seven remainder; 15 into 1387 goes 92 times, and 7 remainder.  



点击收听单词发音收听单词发音  

1 nought gHGx3     
n./adj.无,零
参考例句:
  • We must bring their schemes to nought.我们必须使他们的阴谋彻底破产。
  • One minus one leaves nought.一减一等于零。
2 remainder wBRzr     
n.余下的部分,剩下的人数
参考例句:
  • They joined up with us to spend the remainder of the holiday.他们来跟我们一起共度余下的假期。
  • He spent the remainder of his years in Japan.他在日本度过了余生。
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