用简便算法请帮助37*24+74*38 32*62 - 知识问答

用简便算法请帮助37*24+74*38 32*62-64 750*43+430*25

1个回答

37*24+74*38
=37*24+37*76
=37*(24+76)
=37*100
=3700
32*62-64
=64*31-64
=64*(31-1)
=64*30
=1920
750*43+430*25
=750*43+43*250
=(750+250)*43
=1000*43
=43000

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