Question

直接写得数 

3 4 ×16=	12÷ 3 5 =	3 5 × 5 6 =	0× 7 8 + 1 8 =
1÷ 7 8 =	3 5 ÷ 9 10 =	5 7 ÷ 5 7 =	1 2 × 1 3 ÷ 1 2 × 1 3 =
11 15 × 25 44 =	7 11 ÷14=	2 9 ÷ 2 5 =	1 2 - 1 3 + 1 2 - 1 3 =

Answer 1

考点：分数乘法,分数除法,分数的四则混合运算

专题：运算顺序及法则

分析：根据四则运算的计算法则计算即可求解．注意

1

2

×

1

3

÷

1

2

×

1

3

变形为（

1

2

÷

1

2

）×（

1

3

×

1

3

）计算．

解答： 解：

3 4 ×16=12	12÷ 3 5 =20	3 5 × 5 6 = 1 2	0× 7 8 + 1 8 = 1 8
1÷ 7 8 = 8 7	3 5 ÷ 9 10 = 2 3	5 7 ÷ 5 7 =1	1 2 × 1 3 ÷ 1 2 × 1 3 = 1 9
11 15 × 25 44 = 5 12	7 11 ÷14= 1 22	2 9 ÷ 2 5 = 5 9	1 2 - 1 3 + 1 2 - 1 3 = 1 3

点评：考查了四则运算，关键是熟练掌握计算法则正确进行计算．