Question

直接寫得數(shù)． 1 4 × 2 5 =	5 6 ×24=	7 12 × 3 14 =	25× 3 5 =
9× 7 18 =	2 3 × 9 10 =	4 25 ×10=	1.8× 1 6 =

Answer 1

考點(diǎn)：分?jǐn)?shù)乘法

專題：運(yùn)算順序及法則

分析：分?jǐn)?shù)乘法：分子相乘的積做分子，分母相乘的積做分母，能約分的先約分．

解答： 解：

1 4 × 2 5 = 1 10	5 6 ×24=20	7 12 × 3 14 = 1 8	25× 3 5 =15
9× 7 18 = 7 2	2 3 × 9 10 = 3 5	4 25 ×10= 8 5	1.8× 1 6 =0.3

點(diǎn)評：本題考查了簡單的分?jǐn)?shù)乘法的計算，計算時要細(xì)心，注意把結(jié)果化成最簡分?jǐn)?shù)．