Question

2÷ 8 9 =	13 16 ÷ 1 3 =	4÷ 2 3 =
2 3 ÷ 5 6 =	3 4 ÷ 2 3 =	8 9 ÷4=
3 4 × 8 9 =	8 21 ÷ 2 9 =	7× 3 14 =
3 7 ÷6=	4 5 ÷ 5 4 =	1.6÷0.7=
1÷3× 1 3 =	5 14 ÷ 5 14 =	1 8 ÷ 5 2 =
1 3 ×0.15=	3 7 ÷ 7 8 =	1 2 × 1 3 ÷ 1 3 × 1 2 =

Answer 1

考點(diǎn)：分?jǐn)?shù)除法,分?jǐn)?shù)乘法,小數(shù)除法

專題：計(jì)算題

分析：根據(jù)分?jǐn)?shù)除法的計(jì)算法則：甲數(shù)除以乙數(shù)（0除外），等于甲數(shù)乘乙數(shù)的倒數(shù)；
分?jǐn)?shù)乘分?jǐn)?shù)的計(jì)算法則：分?jǐn)?shù)乘分?jǐn)?shù)，用分子相乘的積作分子，用分母相乘的積作分母，能約分的要化為最簡分?jǐn)?shù)；據(jù)此解答．

解答： 解：

2÷ 8 9 = 9 4	13 16 ÷ 1 3 = 39 16	4÷ 2 3 =6
2 3 ÷ 5 6 = 4 5	3 4 ÷ 2 3 = 9 8	8 9 ÷4= 2 9
3 4 × 8 9 = 2 3	8 21 ÷ 2 9 = 12 7	7× 3 14 = 3 2
3 7 ÷6= 1 14	4 5 ÷ 5 4 = 16 25	1.6÷0.7= 16 7
1÷3× 1 3 = 1 9	5 14 ÷ 5 14 =1	1 8 ÷ 5 2 = 1 20
1 3 ×0.15=0.05	3 7 ÷ 7 8 = 24 49	1 2 × 1 3 ÷ 1 3 × 1 2 = 1 4

點(diǎn)評：此題考查了分?jǐn)?shù)乘除法的計(jì)算法則的運(yùn)用．