36+79= | 15÷1%= | 9.1-1.9= | 7.2÷0.6= | + = |
= | - = | = | 1+30%= | 0.25×8= |
| 0.52= | 6π= | ( + )×12= | = | 99×0.8+0.8= |
解:
| 36+79=115, | 15÷1%=1500, | 9.1-1.9=7.2, | 7.2÷0.6=12, | + = , |
= , | - = , | = , | 1+30%=1.3, | 0.25×8=2, |
| 0.52=0.25, | 6π=18.84, | ( + )×12=14, | =12, | 99×0.8+0.8=80. |
分析:(
+
)×12,
,99×0.8+0.8运用乘法分配律简算;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,正确运用运算法则和运算定律,把结果化成最简分数.
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