Question

直接写得数． 7× 4 21 =	1 3 ×0.15=	3 7 ÷ 8 7 =	1÷ 5 7 =
26× 12 13 =	8 27 ÷ 2 9 =	10- 2 5 =	7 12 × 3 14 =
1- 2 5 - 3 10 =	3 4 + 1 6 + 5 12 =	1 2 × 1 3 ÷ 1 3 × 1 2 =	4 9 × 2 15 ÷ 2 15 =

Answer 1

考点：分数的四则混合运算

专题：计算题

分析：根据分数四则运算的计算法则进行计算即可，

1

2

×

1

3

÷

1

3

×

1

2

、

4

9

×

2

15

÷

2

15

可乘除抵消．

解答： 解：

7× 4 21 = 4 3	1 3 ×0.15=0.05	3 7 ÷ 8 7 = 3 8	1÷ 5 7 = 7 5
26× 12 13 =24	8 27 ÷ 2 9 = 4 3	10- 2 5 =9 3 5	7 12 × 3 14 = 1 8
1- 2 5 - 3 10 = 3 10	3 4 + 1 6 + 5 12 = 4 3	1 2 × 1 3 ÷ 1 3 × 1 2 = 1 4	4 9 × 2 15 ÷ 2 15 = 4 9

点评：此题考查了分数四则运算的计算法则的运用．