Question

直接写出得数． 1- 1 5 =	13 20 + 4 5 =	6× 2 3 =	3 5 ÷12=	3 4 - 2 3 =
9 10 × 5 6 =	5 8 + 1 4 =	1 100 ÷ 1 10 =	10 9 ÷ 8 9 =	1- 4 7 + 3 7 =
4× 1 7 × 3 4 =	1 3 × 1 2 ÷ 1 3 × 1 2 =

Answer 1

考点：分数的加法和减法,分数乘法

专题：运算顺序及法则

分析：根据分数四则运算的计算方法进行计算即可．

解答： 解：

1- 1 5 = 4 5	13 20 + 4 5 = 29 20	6× 2 3 =4	3 5 ÷12= 1 20	3 4 - 2 3 = 1 12
9 10 × 5 6 = 3 4	5 8 + 1 4 = 7 8	1 100 ÷ 1 10 = 1 10	10 9 ÷ 8 9 = 5 4	1- 4 7 + 3 7 = 6 7
4× 1 7 × 3 4 = 3 7	1 3 × 1 2 ÷ 1 3 × 1 2 = 1 4

点评：本题考查了分数四则运算的计算方法，掌握计算法则和运算顺序是解题关键．