直接写出结果 - = | 4.5×102= | ×6= | 270÷18= |
| 5-0.25+0.75= | 0.42-0.32= | 2÷ = | 341-103= |
13×(2+ )= | ________: = | 10×10%= | 23.9÷8= |
7× ÷7× = | 1÷ × = |

解答:
- = , | 4.5×102=459, | ×6= , | 270÷18=15; |
| 5-0.25+0.75=5.5, | 0.42-0.32=0.07 | 2÷ =10, | 341-103=238; |
13×(2+ )=33, | : =![]() | 10×10%=1 | 23.9÷8=2.9875 |
7× ÷7× = , | 1÷ × = . |
分析:按照小数、分数、整数的四则运算的计算方法进行计算即可.
点评:此题关键是看清运算符号,再按照小数、分数、整数的四则运算的计算方法进行计算
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