2.84×7.2+28.4×0.28能用简便计算吗?
4个回答
展开全部
2.84X7.2+28.4Ⅹ0.28
=2.84X7.2十2.84×10X0.28
=2.84X7.2十2.84X2.8
=2.84x(7.2+2.8)
=2.84X10
=28.4
=2.84X7.2十2.84×10X0.28
=2.84X7.2十2.84X2.8
=2.84x(7.2+2.8)
=2.84X10
=28.4
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
2.84x7.2+28.4x0.28
=2.84x7.2+(28.4/10)x(0.28x10
)
=2.84x7.2+2.84x2.8
=2.84x(7.2+2.8)
=2.84x10
=28.4
=2.84x7.2+(28.4/10)x(0.28x10
)
=2.84x7.2+2.84x2.8
=2.84x(7.2+2.8)
=2.84x10
=28.4
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
2.84x7.2+28x0.28
=2.84x7.2+2.84x2.8
=2.84x(7.2+2.8)
=2.84x10
=28.4
=2.84x7.2+2.84x2.8
=2.84x(7.2+2.8)
=2.84x10
=28.4
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