49×46.7+5.23×49+4.9可以怎样简算?
2个回答
2020-06-12
展开全部
你的算式可以这样变换运算方式简算:
49×46.7+5.23×49+4.9
=49×46.7+5.23×49+49×0.1
=49×(46.7+5.23+0.1)
=49×(46.7+5.33)
=(50-1)×52.03
=50×52.03-52.03
=50×(50+2.03)-52.03
=50×50+50×2.03-50-2.03
=250+50×(2.03-1)-2.03
=250+50×(1+0.03)-2.03
=250+50+1.5-2.03
=300-0.43
=299+1-0.43
=299+0.57
=299.57
49×46.7+5.23×49+4.9
=49×46.7+5.23×49+49×0.1
=49×(46.7+5.23+0.1)
=49×(46.7+5.33)
=(50-1)×52.03
=50×52.03-52.03
=50×(50+2.03)-52.03
=50×50+50×2.03-50-2.03
=250+50×(2.03-1)-2.03
=250+50×(1+0.03)-2.03
=250+50+1.5-2.03
=300-0.43
=299+1-0.43
=299+0.57
=299.57
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询
广告 您可能关注的内容 |