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72x99 72的简便计算

72*99+72=72*(99+1)=72*100=7200

72X99十72用简便方法:72X99十72=72X99十72*1=72*(99+1)=72*100=7200

=72x(99+1)=72x100=7200

72*99 =72*(100-1) =72*100-72*1 =7200-72 =7128 你好,本题已解答,如果满意 请点右下角“采纳答案”.

用乘法分配律72x99 +72=72*99+72*1=72*(99+1)=72*100=7200

72x99+72=72x99+72x1 =72x(99+1) =7200 祝学习进步!

=72*99+72+1=72(99+1)+1=72*100+1=7200+1=7201

运用乘法分配律:72X99=72X(100-1)=72X100-72=7200-72=7128

72x99=72x(100-1)=72x100-72x1=7200-72=7128

72x99十72用简便方法:72x99十72=72x99十72*1=72*(99+1)=72*100=7200

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