| 直接写数对又快 66+8= | 3.8+6.2= | × = | 47-8= | 3.8÷0.19= |
12÷ = | 56÷4= | 24×0.5= | = | 471-299= |
| 1÷0.25= | = | 600÷5= | 8-0.8= | = |
| 1.06×8×12.5= | 1.5×0.6= | = | 6.6+4= | 1.5÷0.3= |
= | 1-0.05= | ×4= | = | ÷3= |
- = | 2- - = | = | 1- ÷![]() | 1+ ÷ = |
| 解:66+8=74, | 3.8+6.2=10, | × = , | 47-8=39, | 3.8÷0.19=20, |
12÷ =28, | 56÷4=14, | 24×0.5=12, | = , | 471-299=172, |
| 1÷0.25=4, | = , | 600÷5=120, | 8-0.8=7.2, | = , |
| 1.06×8×12.5=106, | 1.5×0.6=0.9, | = , | 6.6+4=10.6, | 1.5÷0.3=5, |
= , | 1-0.05=0.95, | ×4= , | = , | ÷3= , |
- = , | 2- - =1, | = , | 1- ÷ = , | 1+ ÷ =2. |
分析:本题根据分数,小数,整数的加法、减法、乘法、除法的运算法则计算即可.
471-299可根据凑整法计算;
1.06×8×12.5可根据乘法分配律计算.
点评:完成本题在保证做题质量的同时要注意提高做题的速度.
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