1分数的初步认识(五)第1题答案
3/6 3/4
2分数的初步认识(五)第2题答案
3/7 7/8 2/5
4/10 1 1
3分数的初步认识(五)第3题答案
(1)5/8 + 2/8 = 7/8
(2)5/8 - 2/8 = 3/7
(3)1 - 7/8 = 1/8
4分数的初步认识(五)第4题答案
4/9 + 3/9 = 7/9
7/9 - 4/9 = 3/9
1 - 7/9 = 2/9
7/9 - 3/9 = 4/9