Question

直接寫得數． 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

考點：分數的四則混合運算

專題：計算題

分析：根據分數的四則混合運算順序計算即可．

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

點評：本題考查了分數的四則混合運算，熟練掌握運算順序是解題的關鍵．