数字[shùzì]
1、 基数词 Cardinals
68 sixty-eight
100 a/one hundred
101 a/one hundred and two
746 seven hundred and forty-six
1,000 a/one thousand [a只用于一个数字的开头，后面有百位数时要用one]
1,100 one thousand ,one hundred
5,647 five thousand ,six hundred and forty-seven
10,000 ten thousand
100,000 a/one hundred thousand
1,000,000 a/one million
100,000,000 a/one hundred million
563,032,406 five hundred and sixty-three million ,thirty-two thousand ,four hundred and six
[and只放在百与后面的数之间]
十亿 [英]a/one thousand million [美]a/one billion
百亿 [英]ten thousand million [美]ten billion
千亿 [英]one hundred thousand million [美]one hundred billion
万亿 [英]one billion [美]one trillion

2、 分数 Fractions
1/2 a/one half
1/3 a/one third
1/4 a quarter[onefourth]
1/5 a/one fifth
2/3 two thirds
9/10 nine tenths
10% ten per cent
5‰ five per mill

3、 小数 Decimals
0.7 nought[zero]point seven ;point sever
0.02 point nought two
356.409 three hundred and fifty-six point four nought nine
o.5% decimal five percent

4、 数学式 Mathematic forms
9+3=12 nine plus three equals twelve
8+2=10 eight and two are ten
7+0=7 seven and nought is equal to seven
20+14+56=90 twenty,fourteen and fifty-six added together are make ninety
13-5=8 thirteen minus five equal eight
3-2=1 two from three leaves one
1×1=1 one multiplied by one equals one ;once one is one
2×5=10 twice five is ten
6×0=0 six multiplied by nought equals nought
7×8=56 seven times eight is fifty-six
20÷5=4 twenty divided by five makes [isequalto]four
24÷3=8 three into twenty-four goes eight times
1:3=3:9 one is to three as three is to nine ; the ratio of one to three equals the ratio of three to nine

5、 年份
206 B.C. two o six B.C
770 seven seventy ,seven seven o , seven hundred and seventy
1900 nineteen hundred
19- nineteen something
1905 nineteen o five
1992 nineteen ninety-two
2000 two thousand
2001 two thousand and one
1990’s nineteen nineties [20世纪90年代]
1918.12.31 december thirty-first [thethirty-firstofdecember]nineteen eighteen.在某日前面用on，在年份与日期之间用逗号
6.负数
-5 ：读作minus five