8.5+7.6一8.5+2.4怎样简算急?
问题描述:
8.5+7.6一8.5+2.4怎样简算急?
答
8.5+7.6-8.5+2.4=8.5-8.5+7.6+2.4=7.6+2.4=10(移位就行了)
8.5+7.6一8.5+2.4怎样简算急?
8.5+7.6-8.5+2.4=8.5-8.5+7.6+2.4=7.6+2.4=10(移位就行了)