Question

直接写得数． 5× 7 25 =	2 6 × 3 2 =	1 2 + 1 2 =	11 9 × 1 22 =	7 8 - 1 4 =
3 14 × 7 5 =	1 2 × 1 4 × 1 5 =	（ 1 2 + 1 3 ）×12=	1- 2 4 × 1 2 =	7 3 + 7 3 × 2 7 =

Answer 1

考点：分数的四则混合运算

专题：计算题

分析：根据分数的四则混合运算顺序计算即可．

解答：

解：5× 7 25 = 7 5	2 6 × 3 2 = 1 2	1 2 + 1 2 =1	11 9 × 1 22 = 1 18	7 8 - 1 4 = 5 8
3 14 × 7 5 = 3 10	1 2 × 1 4 × 1 5 = 1 40	（ 1 2 + 1 3 ）×12=10	1- 2 4 × 1 2 = 3 4	7 3 + 7 3 × 2 7 =3

点评：本题考查了分数的四则混合运算，熟练掌握运算顺序是解题的关键．