Question

口算 5 16 × 8 15 =	1- 6 7 =	5 5 8 ÷ 5 8 =	1 3 ÷ 4 15 × 3 5 =
5 8 + 1 2 =	8 9 ÷ 7 9 =	5 12 × 4 15 =	1 2 - 1 3 ÷ 2 3 =
13÷ 1 2 =	11 23 ×46=	0× 8 9 =	4 5 × 3 7 ÷ 13 40 =
6 7 × 5 12 =	1 2 - 1 3 =	10 13 ÷ 5 26 =	3 8 × 4 5 ÷ 13 40 =

Answer 1

考点：分数的加法和减法,分数乘法,分数的四则混合运算

专题：运算顺序及法则

分析：按照分数四则运算的计算法则和混合运算的运算顺序直接列式计算即可．

解答：

解： 5 16 × 8 15 = 1 6	1- 6 7 = 1 7	5 5 8 ÷ 5 8 =9	1 3 ÷ 4 15 × 3 5 = 3 4
5 8 + 1 2 = 9 8	8 9 ÷ 7 9 = 8 7	5 12 × 4 15 = 1 9	1 2 - 1 3 ÷ 2 3 =0
13÷ 1 2 =26	11 23 ×46=22	0× 8 9 =0	4 5 × 3 7 ÷ 13 40 = 96 91
6 7 × 5 12 = 5 14	1 2 - 1 3 = 1 6	10 13 ÷ 5 26 =4	3 8 × 4 5 ÷ 13 40 = 12 13

点评：掌握分数四则运算的计算法则和混合运算的运算顺序是解决问题的关键．