Question

直接寫得數(shù)．

3.6+5.4=	650-100=	0.008×1000=	70÷0.01=	2.8×20%=
25÷ 1 4 =	1÷ 3 5 =	7 12 × 9 14 =	1 3 + 5 6 + 2 3 =	2 5 ×0.25+3=

Answer 1

考點(diǎn)：小數(shù)乘法,整數(shù)的加法和減法,分?jǐn)?shù)乘法,分?jǐn)?shù)除法

專題：計(jì)算題

分析：根據(jù)四則運(yùn)算的計(jì)算法則進(jìn)行計(jì)算即可求解．注意

1

3

+

5

6

+

2

3

根據(jù)加法交換律和結(jié)合律計(jì)算．

解答： 解：

3.6+5.4=9	650-100=550	0.008×1000=8	70÷0.01=7000	2.8×20%=0.56
25÷ 1 4 =100	1÷ 3 5 = 5 3	7 12 × 9 14 = 3 8	1 3 + 5 6 + 2 3 =1 5 6	2 5 ×0.25+3=3.1

點(diǎn)評(píng)：考查了四則運(yùn)算，關(guān)鍵是熟練掌握計(jì)算法則正確進(jìn)行計(jì)算．