Question

口算：

8× 3 4 =	5 12 ×8=	3 7 × 14 15 =	14× 7 14 =
13 24 ×0=	3 4 × 5 6 =	13 14 × 21 26 =	4 33 × 11 12 =
2 5 × 3 8 × 5 12 =	2 5 + 2 15 =	3 4 + 3 12 =	18× 3 18 ×1=

Answer 1

考點(diǎn)：分?jǐn)?shù)乘法

專題：運(yùn)算順序及法則

分析：根據(jù)分?jǐn)?shù)加法、乘法的計(jì)算法則，直接進(jìn)行口算即可．

解答： 解：

8× 3 4 =6	5 12 ×8= 10 3	3 7 × 14 15 = 2 3	14× 7 14 =7
13 24 ×0=0	3 4 × 5 6 = 5 8	13 14 × 21 26 = 3 4	4 33 × 11 12 = 1 9
2 5 × 3 8 × 5 12 = 1 16	2 5 + 2 15 = 8 15	3 4 + 3 12 =1	18× 3 18 ×1=3．

點(diǎn)評：此題考查的目的是理解掌握分?jǐn)?shù)加法、乘法的計(jì)算法則，并且能夠正確熟練地進(jìn)行口算，提高口算能力．