加+：plus
减-：minus
乘×：times
除÷：divided
二、不等号和等号：> ≥ < ≤ ≠ =
大于>：is greater than
大于等于(不小于)≥：is more than or equal to / is no less than
小于<：is less than
小于等于(不大于)≤：is less than or equal to / is no more than
不等于≠：is not equal to
等于=：equals
例句：
1、12+36=48：Twelve plus thirty-six is forty-eight.
2、10-4=6: Ten minus four is six. / Ten minus four equals four.
3、5×5=25：Five times five is twenty-five.
4、20÷4=5：Twenty divided by four is five.
5、5>1：Five is greater than one.
6、7+4≥10: Seven plus four is equal to or greater than ten.
7、99<100：Ninety-nine is less than one hundred.
8、1≤8：One is less than or equal to eight. / One is no more than eight.
9、1≠0：One is not equal to zero.
三、分数、小数和百分数英文表达
1、基数词-序数词 表达分数：
1/2：one half, one second
1/12: one twelfth
3/8: three eighths
9/10: nine tenths
2、基数词-基数词 表达分数：
1/3: one over three
3/8: three over eight
3、小数英文表达：
1.5: one point five
0.2: zero point two or point two
6.03 six point o three
4、百分数英文表达：
33%: thirty-three percent
0.72% zero point seven two percent
