198*35
=（200-2）*35
=200*35-2*35
=7000-70
=6930
125*72*7
=（125*8）*（9*7）
=1000*63
=6300
57*16+44*16-16
=（57+44-1）*16
=100*16
=1600
198*35 125*72*7 57*16+44*16-16的简便计算
198*35 125*72*7 57*16+44*16-16的简便计算
数学人气：836 ℃时间：2020-01-27 04:14:43
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