我会用简便方法计算,计算结果最小的是(  ) A.372+186+214 B.102+100+99+101+98 C.279+(5

日期:2021-06-01 19:53:19 人气:1

我会用简便方法计算,计算结果最小的是(  ) A.372+186+214 B.102+100+99+101+98 C.279+(5

A、372+186+214
=372+(186+214)
=372+400
=772;

B、102+100+99+101+98
=(102+98)+100+(99+101)
=200+100+200
=300+200
=500;

C、279+(548-79)
=279+548-79
=279-79+548
=200+548
=748;

D、503
    A+
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