21.9÷0.8÷2.1脱式计算
脱式计算.(能简算的要简算)6.4÷0.8-1.5×44.8×(3.5-2.1)÷7(4.2+4.2÷2.1)÷0.21.9×2.34+1.9×7.66....
脱式计算.(能简算的要简算)
6.4÷0.8-1.5×4
4.8×(3.5-2.1)÷7
(4.2+4.2÷2.1)÷0.2
1.9×2.34+1.9×7.66. 展开
6.4÷0.8-1.5×4
4.8×(3.5-2.1)÷7
(4.2+4.2÷2.1)÷0.2
1.9×2.34+1.9×7.66. 展开
1个回答
展开全部
①6.4÷0.8-1.5×4
=8-6
=2
②4.8×(3.5-2.1)÷7
=4.8×1.4÷7
=4.8×0.2
=0.96
③(4.2+4.2÷2.1)÷0.2
=(4.2+2)÷0.2
=6.2÷0.2
=31
④1.9×2.34+1.9×7.66
=1.9×(2.34+7.66)
=1.9×10
=19
=8-6
=2
②4.8×(3.5-2.1)÷7
=4.8×1.4÷7
=4.8×0.2
=0.96
③(4.2+4.2÷2.1)÷0.2
=(4.2+2)÷0.2
=6.2÷0.2
=31
④1.9×2.34+1.9×7.66
=1.9×(2.34+7.66)
=1.9×10
=19
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
广告 您可能关注的内容 |