运用简便方法计算更简单.234-34-66=______ 528-53-47=______ 435-(135+189)=______248-7...

2025-03-06 21:21:14
推荐回答(1个)
回答1:

234-34-66
=234-(34+66)
=234-100
=134

528-53-47
=528-(53+47)
=528-100
=428

435-(135+189)
=435-135-189
=300-189
=111

248-75-25
=248-(75+25)
=248-100
=148

627-98
=627-(100-2)
=627-100+2
=527+2
=529

498+86
=598+2+84
=600+84
=684

278-102
=278-(100+2)
=278-100-2
=178-2
=176

657+99
=657+(100-1)
=657+100-1
=756

127+44+73
=(127+73)+44
=244
故答案为:134,428,111,148,529,584,176,756,244.