Question

口算． 2 5 ×3=	1 2 × 3 4 =	5 24 × 1 6 =	5 12 ÷ 5 6 =	5 9 ÷ 5 9 =
1 4 ÷ 1 5 =	10÷ 1 9 =	0÷ 7 8 × 3 4 =	0.1×0.1×0.1=	15.24-1.6-8.4=

Answer 1

考點(diǎn)：分?jǐn)?shù)的四則混合運(yùn)算

專題：運(yùn)算順序及法則

分析：根據(jù)分?jǐn)?shù)、小數(shù)四則運(yùn)算的計(jì)算法則進(jìn)行計(jì)算即可，15.24-1.6-8.4利用減法的性質(zhì)計(jì)算．

解答： 解：

2 5 ×3=1.2	1 2 × 3 4 =0.375	5 24 × 1 6 = 5 144	5 12 ÷ 5 6 = 1 2	5 9 ÷ 5 9 =1
1 4 ÷ 1 5 =1.25	10÷ 1 9 =90	0÷ 7 8 × 3 4 =0	0.1×0.1×0.1=0.001	15.24-1.6-8.4=5.24

點(diǎn)評(píng)：本題考查了簡(jiǎn)單的分?jǐn)?shù)乘除法的計(jì)算，計(jì)算時(shí)要細(xì)心，注意把結(jié)果化成最簡(jiǎn)分?jǐn)?shù)．