Question

口算． 3 5 × 3 4 =	9 2 ÷4=	4 7 ÷ 2 3 =	1 2 ÷ 1 8 =	7 15 × 5 21 =
65× 2 5 =	1 2 ÷ 3 5 =	1 2 ÷ 1 3 =	2 9 ×3=	1 2 × 4 5 =

Answer 1

考点：分数除法,分数乘法

专题：运算顺序及法则

分析：本题根据分数乘法与除法的运算法则计算即可．

解答： 解：

3 5 × 3 4 = 9 20	9 2 ÷4= 9 8	4 7 ÷ 2 3 = 6 7	1 2 ÷ 1 8 =4	7 15 × 5 21 = 1 9
65× 2 5 =26	1 2 ÷ 3 5 = 5 6	1 2 ÷ 1 3 = 3 2	2 9 ×3= 2 3	1 2 × 4 5 = 2 5

点评：完成分数乘除法算式要细心，注意约分．