Question

直接写出得数．

5 7 ÷5=	8 9 ÷4=	1 6 ÷2=	2 3 ÷3=
1 2 ÷ 1 4 =	2 3 ÷ 1 3 =	2 5 ÷ 2 5 =	5 6 ÷ 5 3 =
1÷ 5 8 =	15÷ 1 5 =	1 2 ÷ 5 6 =	2 3 ÷ 8 9 =
5 12 × 2 3 =	7 8 × 8 7 =	4 9 + 2 9 =	1- 6 7 =

Answer 1

分析：此题根据分数加减乘除法的运算法则计算即可．

解答：解：

5 7 ÷5= 1 7	8 9 ÷4= 2 9	1 6 ÷2= 1 12	2 3 ÷3= 2 9
1 2 ÷ 1 4 =2	2 3 ÷ 1 3 =2	2 5 ÷ 2 5 =1	5 6 ÷ 5 3 = 1 2
1÷ 5 8 = 8 5	15÷ 1 5 =75	1 2 ÷ 5 6 = 3 5	2 3 ÷ 8 9 = 3 4
5 12 × 2 3 = 5 18	7 8 × 8 7 =1	4 9 + 2 9 = 2 3	1- 6 7 = 1 7

点评：此题考查了分数四则混合运算的计算方法，要遵循运算法则认真计算．