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99乘63用简便方式算

63*99+63 =63(99+1) =63*100 =6300

=(99+1)*63 =100*62 =5200

99*63=100*63-63=6237

98*63=(100-2)*63=100*63-2*63=6300-126=6174

=63乘以(100-1) =63乘以100-63乘以1 =6300-63 =6237

99x63; =(100-1)x63; =100x63-1x63; =630-63; =567

63*99 =63*100-63 =6300-63 =6237

99加1的和,乘以63.

63*99+63 =63*99+63*1=63*100=6300

=(100-2)*63=100*63-2*63=6300-126=6174

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