问题
计算题
脱式计算。(能简算的要用简便方法计算) | ||||||
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答案
(1)3190-[3124-(962-39)]
=3190-[3124-923]
=989
=125×(83+17)×8
=100000
=(226-26)×13
=2600
(4) [275-(32+46)]×28
=[275-78]×28
=5516
=81000÷(125×8)
=81
=72×(140+360)
=36000
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