如题所述
148X45-52X45
=45X(148-52)
=45X(150-54)
=45X(100-4)
=4500-180
=4320
希望帮助到你,欢迎追问!!
=45X(148-52)
=45X(150-54)
=45X(100-4)
=4500-180
=4320
希望帮助到你,欢迎追问!!
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第1个回答 2013-04-16
(148-52)*45=96*45=(100-4)*45=4500-180=4320
第2个回答 2013-04-16
148*45 - 52*45
=45*(148-52)
=45*(150-2-50-2)
=45*(100-4)
=45*(10+2)(10-2)
=9*5*12*8
=9*12*5*8
=108*40
=4320本回答被提问者和网友采纳
=45*(148-52)
=45*(150-2-50-2)
=45*(100-4)
=45*(10+2)(10-2)
=9*5*12*8
=9*12*5*8
=108*40
=4320本回答被提问者和网友采纳
第3个回答 2013-04-16
148X45-52X45
=45X(148-52)
=4500-180
=4320
=45X(148-52)
=4500-180
=4320
第4个回答 2013-04-16
148×45-52×45
=(148-52)×45
=[(200-52)-52]×45
=2×(100-52)×45
=90×48
=4320
=(148-52)×45
=[(200-52)-52]×45
=2×(100-52)×45
=90×48
=4320