题目内容

脱式计算,能简算的要简算。
(1)0.125+3.7×+×5.3 (2)(4.6÷5+0.4×0.2)×2.8
(3)×[÷(-)] (4)(+)×+
(1)原式=+3.7×+×5.3
               =×(1+3.7+5.3)
               =×10
               =
(2)原式=(4.6×0.2+0.4×0.2)×2.8
                =(4.6+0.4)×0.2×2.8
                =5×0.2×2.8
                =2.8
(3)原式=×(÷
               =××3
               =
(4)原式=×+×+
                =++
                =1
练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网