99*63怎么简便运算?48*2545*102
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![99*63怎么简便运算?48*2545*102](/uploads/image/z/49153-49-3.jpg?t=99%2A63%E6%80%8E%E4%B9%88%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97%3F48%2A2545%2A102)
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99*63怎么简便运算?48*2545*102
99*63怎么简便运算?
48*25
45*102
99*63怎么简便运算?48*2545*102
=(100-1)*63
=6300-63
=6237
48*25=12*4*25=12*100=1200
45*102=45*(100+2)=4500+90=4590