算数-基本四则运算

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基本四则运算
flyfish 2015-10-28
单词
加(add,plus)
和(sum)
减(subtract)
差(difference)
乘(multiply,times)
积(product)
除(divide)
商(quotient)

问题
The sum of the numbers x,3x-y and 2y+4 is subtracted from 15. In terms of x and y,what is the result?

A is subtracted from B 表示从B中减去A

问题
If 13 is added to 2 more than one-half of a certain number,the result is 37. What is the original number?

add和add to都有加上的意思
add仅是加上后面的数
add to是加上后面的整个部分。
比如
1 add 2 minus 3表示1+2-3
1 is added to 2 minus 3表示1+(2-3)

问题
If a number x is increased by 2 and the result is squared, the final value will be 49. Which of the following could be the value of x?

A is increased/decreased by B表示A增加/减少了B,
A is increased/decreased to B A增加/减少到B
注意 了和到的区别
A is squared是将A平方的意思,等价的表达有
square A
the square of A

问题
If 8+x is 4 more than 16,what is the value of 2x?

A less than B表示比B少A,
A more than B 表示比B多A

问题
If multiplying k by 7 gives the same result as squaring k。

multiply A by B”表示用B乘以A
等价的表达是A is multiplied by B

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