| 4×25%=________; | =________; | 0.4÷ =________; | =________; |
=________; | 37.5%+ =________; | 6÷ =________; | ÷ ÷ =________; |
÷ =________; | 30%-25%=________; | 0÷ =________; | ÷ =________. |
1
151

0.050
分析:4×25%先把百分数化成小数再计算;
按照从左到右的顺序计算;37.5%+
先把百分数化成分数再计算;
÷
÷
按照从左到右的顺序计算;其它题目根据运算法则直接求解.
解答:
| 解:4×25%=1; | = ; | 0.4÷ =1; | = ; |
=15; | 37.5%+ =1; | 6÷ = ; | ÷ ÷ = ; |
÷ = ; | 30%-25%=0.05; | 0÷ =0; | ÷ = . |
点评:在一个算式中,如果有不同的数的形式,先观察算式看化成哪种形式的数比较简便,再由此计算求解.
=________;
=________;
÷
=________;
=________;
÷
=________.