432x99-568简便计算
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432×99-568
=432×99-(1000-432)
=432x99-1000+432
=432x99+432-1000
=432x(99+1)-1000
=432x100-1000
=43200-1000
=42200
=432×99-(1000-432)
=432x99-1000+432
=432x99+432-1000
=432x(99+1)-1000
=432x100-1000
=43200-1000
=42200
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展开全部
432*99-568
=432*99+432-432-568
=432*(99+1)-(432+568)
=432*100-1000
=43200-1000
=42200
=432*99+432-432-568
=432*(99+1)-(432+568)
=432*100-1000
=43200-1000
=42200
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432x99-568
=432×(100-1)-570+2
=43200-432+2-570
=43200-(430+570)
=43200-1000
=42200
=432×(100-1)-570+2
=43200-432+2-570
=43200-(430+570)
=43200-1000
=42200
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