题目内容
| 20×37= | 3600÷60= | 125×8= | 5b-4b= | 42= |
| 16×400= | 420÷30= | 760÷20= | a+a= | 102= |
解:
| 20×37=740, | 3600÷60=60, | 125×8=1000, | 5b-4b=b, | 42=16, |
| 16×400=6400, | 420÷30=14, | 760÷20=38, | a+a=2a. | 102=100 |
故答案为:740,60,1000,b,16,6400,14,38,2a,100.
分析:根据整数乘法和除法的计算法则,以及带字母计算的方法求解.
点评:本题考查了整数乘除法的计算方法,计算时要细心,要注意运算结果末尾0的个数.
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