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500÷7怎样估算
更新时间: 2021-05-24 09:19:28  

1、用估算的方法来计算500除以7大约等于71

2、70x7=490

3、490+7=497

4、∴≈71

5、500÷7≈490÷7=70

6、889÷3≈900÷3=300

7、190÷5≈200÷5=40

8、723÷9≈720÷9=800

9、472÷8≈480÷8=60

关键词: 怎样 估算

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