| 直接写出得数. 8÷0.125= | 1.01-0.91= | 1.9×0.5×4= | 0.37+ = | 1 + = |
3.2× = | 8- = | 75×99= | 81÷ = | 2.5×6.7×4= |
| (1)8÷0.125=64; | (2)1.01-0.91=0.1; | (3)1.9×0.5×4=3.8; | (4)0.37+ =0.67; | (5)1 + =2; |
(6)3.2× =0.3; | (7)8- =7 ; | (8)75×99=7425; | (9)81÷ =243; | (10)2.5×6.7×4=67. |
分析:(1)根据小数除法法则计算即可;
(2)根据小数减法法则计算即可;
(3)(8)根据乘法结合律简便计算;
(4)先将分数变为小数,再根据小数加法法则计算即可;
(5)(7)根据分数减法法则计算即可;
(6)根据分数乘法法则计算即可;
(9)根据分数除法法则计算即可;
(10)根据乘法交换率计算.
点评:考查了四则运算,解题的关键是熟悉运算法则,灵活运用运算定律.
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