8÷8÷ = | +0.37= | 10-1![]() | 1-9.9% |
1 :2![]() | 99099÷99 | + ×4 | 300×0.3% |
| 1%÷10% | 0.1×0.01÷0.1. |
8÷8÷ =8, | +0.37=0.995, | 10-1 =8![]() | 1-9.9%=0.901, |
1 :2 = , | 99099÷99=1001, | + ×4=1 , | 300×0.3%=0.9, |
| 1%÷10%=0.1, | 0.1×0.01÷0.1=0.01. |
分析:8÷8÷
按照从左到右的顺序计算;
+0.37先把分数化成小数,然后计算;1
:2
求比值用比的前项除以比的后项即可;
+
×4先算乘法,再算加法;0.1×0.01÷0.1运用乘法结合律简算;其它题目根据运算法则直接求解.
点评:本题考查了基本的运算,计算时要细心,注意计算的准确率.


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