999.9×2.8-0.666×3700怎么简便计算?
3个回答
展开全部
999.9×2.8-0.666×3700的的简便方法是什么?
999.9×2.8-0.666×3700
=999x2.8+0.9x2.8-666x3.7
=333x3x2.8-333x2x3.7+0.9x2.8
=333x(3x2.8-2x3.7)+(1-0.1)x2.8
=333x(8.4-7.4)+2.8-0.28
=333+2.8-0.28
=333+2.52
=335.52
999.9×2.8-0.666×3700
=999x2.8+0.9x2.8-666x3.7
=333x3x2.8-333x2x3.7+0.9x2.8
=333x(3x2.8-2x3.7)+(1-0.1)x2.8
=333x(8.4-7.4)+2.8-0.28
=333+2.8-0.28
=333+2.52
=335.52
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
999.9*2.8-0.666*3700
=999.9*2.8-666*3.7
=999*2.8-666*2.8-666*0.9+0.9*2.8
=333*2.8-666+66.6+2.8-0.28
=111*8.4-600+0.6+2.52
=840+84+8.4-600+3.12
=240+92.4+3.12
=240+95.52
=335.52
=999.9*2.8-666*3.7
=999*2.8-666*2.8-666*0.9+0.9*2.8
=333*2.8-666+66.6+2.8-0.28
=111*8.4-600+0.6+2.52
=840+84+8.4-600+3.12
=240+92.4+3.12
=240+95.52
=335.52
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