1、101x99x999+999
2、(八又五分之三)x2.7+62x14%+35x0.86
1、101x99x999+999
2、(八又五分之三)x2.7+62x14%+35x0.86
1题101(99*999+99)
=101(99(999+1))
=101*99*1000
=(100+1)*99*1000
=9900000+99000
=9999000
3
2题8— X2.7+62X14%+35X0.86
5
=43/5x27/10+62x14/100+35x86/100
=43x27/50+62x7/50+35x43/50
=43(27+35)/50+62x7/50
=43x62/50+62x7/50
=62x(43+7)/50
=62x50/50
=62
101(99*999+99)
=101(99(999+1))
=101*99*1000
=(100+1)*99*1000
=9900000+99000
=9999000