| 350×0.02= | 1-25%= | 1+15%= | 12-7.9= |
× = | - = | ( - )×24= | 16× = |
| 131131÷131= | × ×0= | 1÷ - ÷1= | 12.5×0.08= |
| 0.9+99×0.9= | 7.8×0.25×4= | - + = | 0.52×100= |
×8+8× = | ×21× = | 98-0.23-0.77= | + ÷ = |
44÷ = | 9300÷5÷6= | 0÷ = | 1997+1998+1999+6= |
| 解:350×0.02=7, | 1-25%=0.75, | 1+15%=1.15, | 12-7.9=4.1, |
× = , | - = , | ( - )×24=5, | 16× =12, |
| 131131÷131=1001, | × ×0=0, | 1÷ - ÷1=9.9 | 12.5×0.08=1, |
| 0.9+99×0.9=90, | 7.8×0.25×4=7.8, | - + = , | 0.52×100=52, |
×8+8× =12, | ×21× = , | 98-0.23-0.77=97, | + ÷ = = , |
44÷ =40, | 9300÷5÷6=310, | 0÷ =0, | 1997+1998+1999+6=6000. |
分析:根据整数、小数、分数四则运算的计算方法及四则混合运算的运算顺序进行解答.
点评:此题涉及知识点较多,解答此题的关键是根据整数、小数、分数四则混合运算的运算的顺序进行解答,尤其注意运算定律在计算中的应用.
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