分数
表示分数时,分子要用基数词,分母用序数词.如果分子大于1,分母必须用复数形式：
1／3→a（one）third
2／3→two thirds
1／4→a（one）quarter（或fourth）
3／7→three sevenths
1／2→应读作a（one）half
＊比较复杂的分数如：24／789,多读作 twenty four over seven hundred and eighty nine.
小数
表示小数时,小数点前面的基数词和前面讲的基数词的读法相同；小数点后的数字则必须一一读出：
0．0089→（zero ／naught）point zero zero eight nine
1．36→one point three six
百分数
百分数由percent表示,百分号％读作 percent,应用时常与by连用.
0．68％→zero point six eight percent
6％→six percent
369％→three hundred and sixty nine percent
The output of steel went up by 20 percent．钢产量增长20％.
The price of cotton was reduced by 20 percent．棉花的价格下降了20％.
The loss of water has been reduced to less than 30 percent．水的损耗减少到30％以下