8.63乘以4.6加上5.4乘以5.21加上34.2乘以0.54的简便方法?
展开全部
8.63×4.6+5.4×5.21+34.2×0.54
=8.63×4.6+(5.4×5.21+3.42×5.4)
=8.63×4.6+5.4×(5.21+3.42)
=8.63×4.6+5.4×8.63
=(4.6+5.4)×8.63
=10×8.63
=86.3
=8.63×4.6+(5.4×5.21+3.42×5.4)
=8.63×4.6+5.4×(5.21+3.42)
=8.63×4.6+5.4×8.63
=(4.6+5.4)×8.63
=10×8.63
=86.3
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
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