Question

直接写出得数． 6× 1 2 =	3 8 + 5 8 =	1 4 - 1 8 =	4÷ 1 5 =
1 4 ×4=	1 5 ÷ 5 6 =	1 2 × 3 5 =	1 4 ÷3=
1- 7 10 =	1 2 ×8=	4 9 × 3 4 =	9 17 ÷ 9 17 =
2.4× 5 8 =	2 7 ×14× 1 2 =	3 5 ÷ 1 5 × 1 3 =	12÷ 3 7 ÷ 7 8 =

Answer 1

考点：分数乘法,分数的加法和减法,分数除法,分数的四则混合运算

专题：运算顺序及法则

分析：根据分数减法、乘法、除法的计算法则，进行依次解答即可．

解答： 解：

6× 1 2 =3	3 8 + 5 8 =1	1 4 - 1 8 =0.25	4÷ 1 5 =20
1 4 ×4=1	1 5 ÷ 5 6 = 6 25	1 2 × 3 5 =0.3	1 4 ÷3= 1 12
1- 7 10 =0.3	1 2 ×8=4	4 9 × 3 4 = 1 3	9 17 ÷ 9 17 =1
2.4× 5 8 =1.5	2 7 ×14× 1 2 =2	3 5 ÷ 1 5 × 1 3 =1	12÷ 3 7 ÷ 7 8 =32

点评：明确分数减法、乘法、除法的计算法则，是解答此题的关键．