Question

口算．

1 4 ÷ 1 2 =	0÷ 2 9 =	5 8 ÷ 5 8 =	7 12 × 12 7 =	6÷ 2 5 =
3 14 ÷7=	7 20 ×1=	7 12 + 5 6 =	1- 1 8 - 5 8 =	5 9 × 2 21 × 7 10 =

Answer 1

考点：分数除法,分数乘法

专题：运算顺序及法则

分析：根据分数加法、减法、乘法、除法的计算法则，分别解答即可．

解答：

解： 1 4 ÷ 1 2 = 1 2	0÷ 2 9 =0	5 8 ÷ 5 8 =1	7 12 × 12 7 =1	6÷ 2 5 =15
3 14 ÷7= 3 98	7 20 ×1= 7 20	7 12 + 5 6 = 17 12	1- 1 8 - 5 8 = 1 4	5 9 × 2 21 × 7 10 = 1 27

点评：此题考查的目的是熟练掌握分数加、减、乘、除法的计算法则，并灵活掌握和应用．