2.92×12.5怎么简便计算?
26个回答
展开全部
2.92×12.5的简便计算是:
2.92×25/2
=1.46×25=36.5
2.92×25/2
=1.46×25=36.5
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
2.92×12.5
=2.92×(10+2+0.5)
=2.92×10+2.92×2+2.92×0.5
=29.2+5.84+1.46
=29+5+1+(0.2+0.8+0.4)+(0.04+0.06)
=35+1.4+0.1
=36.5
=2.92×(10+2+0.5)
=2.92×10+2.92×2+2.92×0.5
=29.2+5.84+1.46
=29+5+1+(0.2+0.8+0.4)+(0.04+0.06)
=35+1.4+0.1
=36.5
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
2.92×12.5
=(3-0.08)×12.5
=3×12.5-0.08×12.5
=37.5-1
=36.5
=(3-0.08)×12.5
=3×12.5-0.08×12.5
=37.5-1
=36.5
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
解析:2.92=3-0.08
12.5×3=37.5。
0.08×12.5=8×0.125=1
即:2.92×12.5=(3-0.08)×12.5
=3×12.5-0.08×12.5=36.5
12.5×3=37.5。
0.08×12.5=8×0.125=1
即:2.92×12.5=(3-0.08)×12.5
=3×12.5-0.08×12.5=36.5
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
2.92×12.5
=(2.92÷8)×(12.5×8)
=0.365×100
=36.5
=(2.92÷8)×(12.5×8)
=0.365×100
=36.5
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