0 ~ 99
10 ~ 12    zero, one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve
13 ~ 19    thirteen, fourteen, fifteen, sixteen, seventeen, eighteen, nineteen
20, 30, 40 ... twenty, thirty, forty, fifty, sixty, seventy, eighty, ninety
21, 22, 23 ... twenty-one, twenty-two, twenty-three, ...

百 (hundred)
分成百位、十位及個位
例: 245   two hundred and forty-five   * 中間要加上 and 連接

千 (thousand)
分成千位、百位、十位及個位
例: 2186   two thousand, one hundred and eighty-six   * 逗號 + and 就和 A, B and C 的觀念一樣

萬以上的數
英文數字的分法是三個數三個數一組近位，每組一起念，在千位、百萬位、十億位分別由三個逗號區隔。
第一個逗號是千位，叫做 thousand
第二個逗號是百萬，叫做 million
第三個逗號是十億，叫做 billion
例: 23,569,741,168   twenty-three billion, five hundred and sixty-nine million, seven hundred and forty-one thousand, one hundred and sixty-eight

and 觀念與範例
and 的擺放位置是有連續三個或以上的東西，最後要用 and 來連接最後一個東西。
像是 apples, bananas, oranges, and grapes 的觀念一樣。
例: 2,039,100   two million, thirty-nine thousand, and one hundred
     2,233,100   two million, two hundred and thirty-three, and one hundred   * 中間的 and 是三個三個一組的念法    15,500,000   fifteen million and five hundred thousand