1、75*299+75
=75*299+75*1
=75*(299+1)
=75*300
=22500
2、125*88
=100*88+25*88
=8800+2200
=11000
3、(125+17)*8
=125*8+17*8
=1000+136
=1136
4、88*102
=88*100+88*2
=8800+176
=8976
1、75*299+75
=75*299+75*1
=75*(299+1)
=75*300
=22500
2、125*88
=100*88+25*88
=8800+2200
=11000
3、(125+17)*8
=125*8+17*8
=1000+136
=1136
4、88*102
=88*100+88*2
=8800+176
=8976