Question

直接寫出得數(shù)． 132+49=	0.73-0.64=	2.4×5=	511-1.8=
1 2 + 1 3 =	2 5 ÷ 4 5 =	18× 2 3 =	16 9 ÷ 4 3 =
5× 4 9 + 5 9 ×5=	0.37+5.8+1.63=	5.5÷0.25÷4=

Answer 1

考點(diǎn)：整數(shù)的加法和減法,分?jǐn)?shù)的加法和減法,分?jǐn)?shù)乘法,分?jǐn)?shù)的四則混合運(yùn)算,小數(shù)的加法和減法,小數(shù)四則混合運(yùn)算

專題：計(jì)算題

分析：根據(jù)四則運(yùn)算的計(jì)算法則計(jì)算即可求解．注意5×

4

9

+

5

9

×5根據(jù)乘法分配律計(jì)算，0.37+5.8+1.63根據(jù)加法交換律和結(jié)合律計(jì)算，5.5÷0.25÷4根據(jù)除法的性質(zhì)計(jì)算．

解答： 解：

132+49=181	0.73-0.64=0.09	2.4×5=12	511-1.8=509.2
1 2 + 1 3 = 5 6	2 5 ÷ 4 5 = 1 2	18× 2 3 =12	16 9 ÷ 4 3 = 4 3
5× 4 9 + 5 9 ×5=5	0.37+5.8+1.63=7.8	5.5÷0.25÷4=5.5

點(diǎn)評：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．