| 直接写出得数. 1.4÷0.5= | = | = | = |
5- = | 1028+998= | 1-0.98= | = |
| 8×12.5%= | 102-62= | 0.53= | 1÷1%= |
| 49×104≈ | 420÷59≈ | 184÷30≈ | 252×62≈ |
| 解:1.4÷0.5=2.8, | =2.8, | = , | = , |
5- =3.2, | 1028+998=2026, | 1-0.98=0.02, | = , |
| 8×12.5%=1, | 102-62=64, | 0.53=0.125, | 1÷1%=100, |
| 49×104≈5000, | 420÷59≈7, | 184÷30≈6, | 252×62≈15000. |
分析:本题主要根据分数乘除法的计算法则,以及估算的方法求解.
点评:完成此类问题的关键是要细心,注意做题的质量,同时要注意提高做题的速度.
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