| 直接写得数. 0.8×0.04= | 7.8-2.05= | × = | 1+2%= |
| 1.79÷2.5÷4= | ÷ = | 0.6÷0.4= | 35× = |
+ - = | 1.6×(1000+1÷4)= |
| 解:0.8×0.04=0.032, | 7.8-2.05=5.75, | × = , | 1+2%=1.02, |
| 1.79÷2.5÷4=0.179, | ÷ = , | 0.6÷0.4=1.5, | 35× = , |
+ - = , | 1.6×(1000+1÷4)=1600.4. |
分析:根据小数、分数和百分数加减乘除的计算方法进行计算即可;1.79÷2.5÷4=1.79÷(2.5×4)进行简算;
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