25+20分求一道小学的英语翻译和1道数学

1.（（爸爸比妈妈重5分之3，你的逗号位置弄错了啊~~~，问的是百分之几还是几分之几？50/100=1/2 ，并且百分数是没有单位的呀~））

设妈妈的体重为1，张桂的体重为1-1/5=4/5
爸爸的体重为1+3/5=8/5
所以张桂的体重是爸爸的 （4/5）/（8/5）=1/2=50/100
即张桂的体重是爸爸的百分之50。

2。英语翻译
1。My apple is bigger than yours.
2.Tom`s bag is heavier than David`s.
3.My mother is 2 years old younger than my father.
4.This cat is fatter than that cat.
5.His ruler is shorter than mine.

英语翻译
1.My apple is bigger than yours.
2.Tom's bag is heavier than David's.
3.My mother is three years yonger than my father.
4.This cat is fatter than that cat.
5.His ruler is shorter than mine.

52%
1.My apple is bigger than yours.
2.Tom's bag is heavier than David's.
3.My mother is three years yonger than my father.
4.This cat is fatter than that cat.
5.His ruler is shorter than mine.

数学题：
把妈妈的体重看作单位“1”，张桂的体重为:1-1/5=4/5,爸爸的体重为:1+3/5=8/5
用张桂的体重除以爸爸的体重就可以了：4/5除以8/5=1/