1. \$50

Fifty dollars 50美元

2. \$50.25

Fifty dollars twenty-five cents 50美元25美分

3. 0.35

Zero point three five 零点三五

4. 1/3

A third

5.18*34=612

Eighteen multiplied by thirty-four equals six hundred and twelve.

A:What is Eighteen times thirty-four?

18乘34等于多少？

B:It's 612.

6.612/18=34

six hundred and twelve divided by Eighteen is thirty-four

divide单独使用表示划分。一般使用的介词搭配为 divide into分成 We divide into pairs and each pairs and each pair takes a region.我们分成两人一组，每一组负责一个区域。

A:What does six hundred and twelve divided by Eighteen equal?

612除以18等于多少？

B:We get 34.

7.22-10=12

Twenty-two minus ten is twelve.

Minus这个词即可以做减号的意思，也可以表示负号以及零度以下，如：I'm giving him a B minus.我给了他一个B- 。外国考试评分通常不是按照我们的百分制，而是按照A、B、C来评分；The temperature was minus 30 degrees.气温为零下30度。

8.1+3=4

One plus three equals four.

9.  4,973,351

Four million nine hundred and seventy-three thousand three hundred and fifty-one

10.  8:05

Eight zero five

A:What's the time now?

B:It's Eight zero five

11.航班BA677

Flight BA six seven seven

12. 2018年

Two thousand and eighteen