Question

直接寫出得數． 4 5 ×5=	2 3 × 3 5 =	2- 3 4 =	2+ 3 4 =	1 2 × 3 4 ÷ 1 2 × 3 4 =
0× 6 7 =	5 8 × 4 15 =	1 3 - 1 4 =	8 9 ÷4=	1÷ 2 5 =
0÷ 1 8 =	4 7 ÷ 7 4 =	12÷ 1 6 =	5 9 ÷ 1 3 =	1÷6÷3=

Answer 1

考點：分數的四則混合運算,分數乘法,分數除法

專題：運算順序及法則

分析：根據分數乘除法的計算法則計算即可．

解答：

解： 4 5 ×5=4	2 3 × 3 5 = 2 5	2- 3 4 =1 1 4	2+ 3 4 =2 3 4	1 2 × 3 4 ÷ 1 2 × 3 4 = 9 16
0× 6 7 =0	5 8 × 4 15 = 1 6	1 3 - 1 4 = 1 12	8 9 ÷4= 2 9	1÷ 2 5 = 5 2
0÷ 1 8 =0	4 7 ÷ 7 4 = 16 49	12÷ 1 6 =72	5 9 ÷ 1 3 = 5 3	1÷6÷3= 1 18

點評：本題關鍵是明確分數乘除法的計算法則．