分析:(1)根據(jù)小數(shù)加法的計算法則進(jìn)行計算,
(2)根據(jù)小數(shù)乘法的計算法則進(jìn)行計算,
(3)根據(jù)分?jǐn)?shù)除法的計算法則進(jìn)行計算,
(4)先把百分?jǐn)?shù)化成小數(shù),再根據(jù)小數(shù)乘法的計算法則進(jìn)行計算,
(5)(9)根據(jù)四則混合運算的計算順序進(jìn)行計算,
(6)根據(jù)小數(shù)除法的計算法則進(jìn)行計算,
(7)把4210看作4200,703看作700進(jìn)行計算,
(8)根據(jù)除法的計算法則進(jìn)行計算,
(9)根據(jù)乘法分配律進(jìn)行計算.
解答:
解:(1)4.35+19.9=24.25 |
(2)18×0.5=9 |
(3)12÷=14 |
(4)8×25%=2 |
(5)3-3÷4=2.25 |
(6)6÷0.1=60 |
(7)4210÷703≈6 |
(8)99÷81=1 |
(9)(-0.625)×0.84=0 |
(10)3.8×5.5+4.5×3.8=38 |
故答案為:24.25,9,14,2,2.25,60,6,1
,0,38.
點評:本題綜合考查了學(xué)生基本的計算能力.