88*102 125*88 99*23 28*72+72*72的简便计算
问题描述：
88*102 125*88 99*23 28*72+72*72的简便计算
答
88×102
=88×(100+2)
=88×100+88×2
=8800+176
=8976
125×88
=125×8×11
=1000×11
=11000
99×23
=(100-1)×23
=100×23-23
=2300-23
=2277
28×72+72×72
=(28+72)×72
=100×72
=7200