加：add减：subtract乘：multiply除：divide等于：equal

但在算式中的时候，得用：

加：plus 或者 and减：minus 或者 negative乘：times 或者 multiplied by除：divided by等于：equals 或者 is

“Plus”和“and”都可以用来表示加法。但“Plus”更常见。在比较随意的情况下，可以用“is”指代“equals”。”

例句：

2+1=3：2 plus 1 is 3

2-1=1：2 minus 1 is 1

2×1=2：2 times 1 is 2

2÷1=2：2 divided by 1 is 2

加法例句：

How much is 1 plus 2?

1加2等于多少?

What is 1 plus 2? (more common)

1加2是多少?(更常见)

1 + 2 = 3 (One plus two equals three.)

1 + 2 = 3 (One plus two is three.)

1 + 2 = 3 (One and two is three.)

减法例句：

What is 8 minus 2?

8减2等于多少?

8-2 = 6 (Eight minus two equals six.)

8-2 = 6 (Eight minus two is six.)

乘法例句：

What is 7 times 3?

7乘以3等于多少?

7 x 3 = 21 (Seven times three equals twenty-one.)

7 x 3 = 21 (Seven multiplied by three equals twenty-one.)

除法例句：

What is 6 divided by 2?

6除以2等于多少?

6 / 2 = 3 (Six divided by two is three. )

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