Question

直接寫得數(shù)．

2 3 ×12=	7 12 × 3 14 =	5 8 × 4 5 =	5 3 ×5=	0× 6 71 =
15 8 × 4 25 =	2 3 + 1 6 =	1 2 - 2 5 =	5 6 ×3=	7× 1 14 =

Answer 1

考點：分?jǐn)?shù)乘法

專題：運算順序及法則

分析：運用分?jǐn)?shù)的加減及乘除法的計算法則進(jìn)行計算即可．

解答：

解： 2 3 ×12=8	7 12 × 3 14 = 1 8	5 8 × 4 5 = 1 2	5 3 ×5=8 1 3	0× 6 71 =0
15 8 × 4 25 = 3 10	2 3 + 1 6 = 5 6	1 2 - 2 5 = 1 10	5 6 ×3=2.5	7× 1 14 = 1 2

點評：用分?jǐn)?shù)作為計算結(jié)果是時注意要把分?jǐn)?shù)化簡．