47乘99简便方法计算
47乘99简便方法计算
47乘99简便方法计算
=47x(100-1)
=47x100-47
=4700-47
=4653
490乘98 /99用简便方法计算
490x98/99
=490x(99-1)/99
=490x99/99-490x1/99
=490-490/99
=490-(495-5)/99
=490-495/99+5/99
=490-5+5/99
=485+5/99
=485又5/99
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324乘99简便方法计算
324x99
=324x(100-1)
=324x100-324
=32400-324
=32076
62乘99简便方法计算
62×99
=62×(100-1)
=62×100-62
=6200-62
=6138
153乘99简便方法计算
153乘99简便方法计算
153乘99
=153*(100-1)
=153*100-153
=15300-153
=15147
0.85乘99简便方法计算
0.85x100-0.85=84.15
162乘99简便方法计算
162×99
=162×(100-1)
=162×100-162×1
=16200-162
=16038
99乘99/100 怎么算, 要用简便方法计算
99*99/100
=(100-1)(100-1)/100
=(100*100-2*100+1)/100
=100-2+1/100
=98.01
53乘99用简便方法计算
53×99
=53×(100-1)
=53×100-53×1
=5300-53
=5247
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