分析:(1)(6)根據(jù)小數(shù)的加法法則計算即可;
(2)(4)根據(jù)小數(shù)的乘法法則計算即可;
(3)(8)根據(jù)小數(shù)的除法法則計算即可;
(5)(7)根據(jù)小數(shù)的減法法則計算即可;
(9)根據(jù)加法交換律和結合律簡便計算;
(10)先算小括號里面的減法,再算括號外面的乘法;
(11)根據(jù)連減的簡算方法計算;
(12)根據(jù)乘法結合律簡便計算;
(13)根據(jù)乘法交換律簡便計算;
(14)先算小括號里面的加法,再算括號外面的乘法.
解答:解:
0.3+0.8=1.1; |
0.32×0.1=0.032; |
9.08÷0.01=908; |
0.02×1000=20; |
4.8-1.75=3.05; |
4.19+1.05=5.24; |
10-2.45=7.55; |
12÷16=0.75; |
2.4+1.9-2.4+1.9=3.8; |
7×(36-25)=77; |
100-7.33-2.67=90; |
0.33×0.8×0.125=0.033; |
6.3×1.2÷0.9=8.4; |
(100+4)×0.25=26. |
點評:考查了四則運算,關鍵是熟練掌握計算法則,正確進行計算.