Question

算一算

8 9 ÷4=	1÷ 2 3 =	3 5 ÷3=	14÷ 7 15 =	2 5 ÷0.4=
5 7 ÷ 1 7 =	3 8 ÷ 9 16 =	4 5 × 1 2 =	2 3 ÷ 1 9 =	11 16 ÷ 11 16 =
0÷ 5 8 =	4 5 ÷ 1 2 =	17 42 ÷1=	22÷ 11 12 =	9 53 ÷ 9 53 =
5 6 ÷10=	6 13 ÷ 5 26 =	1 10 × 5 8 =	5 6 ÷ 5 3 =	1 4 ÷ 1 12 =

Answer 1

考点：分数除法,分数乘法

专题：运算顺序及法则

分析：运用分数乘除法的计算法则进行计算即可，除以一个数等于乘以这个数的倒数．

解答：

解： 8 9 ÷4= 2 9	1÷ 2 3 =1.5	3 5 ÷3= 1 5	14÷ 7 15 =30	2 5 ÷0.4=1
5 7 ÷ 1 7 =5	3 8 ÷ 9 16 = 2 3	4 5 × 1 2 = 2 5	2 3 ÷ 1 9 =6	11 16 ÷ 11 16 =1
0÷ 5 8 =0	4 5 ÷ 1 2 =1 3 5	17 42 ÷1= 17 42	22÷ 11 12 =24	9 53 ÷ 9 53 =1
5 6 ÷10= 1 12	6 13 ÷ 5 26 =2 2 5	1 10 × 5 8 = 1 16	5 6 ÷ 5 3 = 1 2	1 4 ÷ 1 12 =3

点评：在计算的过程中，注意用分数作为计算结果，分数要化成最简分数．