55*102-110 简便算法
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55*102-110简便算法55*102-110简便算法55*102-110简便算法55*102-110=110*51-110=110*(51-1)=110*50=550055*102-110=55*
55*102-110 简便算法
55*102-110 简便算法
55*102-110 简便算法
55*102-110
=110*51-110
=110*(51-1)
=110*50
=5500
55*102-110
=55*100+55*2-110
=55*100
=5500
55*102-110
=55*(100+2)-110
=55*100+110-110
=55*100
=55
简单不?
55*102-110 =55*102-55*2=55*(102-2)=55*100=5500
=55*51*2-110=110*51-110=110*(51-1)=110*50=5500
55*102-110
=55×2×51-110
=110×﹙51-1﹚
=110×50
=5500
That"s all,thank you.
55*102-110
=55*(102-2)
=55*100
=5500
55*102-110=(55*2/2)*102-110
=55*2*102/2-11-=110*51-110=110*50=5500
55*102-110
=55*(100+2)-110
=55*100+110-110
=55*100
=5500
=55*(100+2)-110
=55*100+55*2-110
=5500+110-110
=5500