1.25ⅹ6.78+25x3.47+125x0.0382（简便计算）
答案:5 悬赏:20 手机版
解决时间 2021-11-28 10:43
- 提问者网友：沉默菋噵
- 2021-11-27 19:26
1.25ⅹ6.78+25x3.47+125x0.0382（简便计算）
最佳答案
- 五星知识达人网友：洒脱疯子
- 2021-11-27 20:46
1.25ⅹ6.78+25x3.47+125x0.0382
=1.25ⅹ6.78+25x3.47+1.25x3.82
=1.25ⅹ（6.78+3.82）+2.5x34.7
=1.25x10.6+2.5x34.7
=1.25×2×5.3+2.5×34.7
=2.5×（5.3+34.7）
=2.5×40
=100追问可以短一点吗？
=1.25ⅹ6.78+25x3.47+1.25x3.82
=1.25ⅹ（6.78+3.82）+2.5x34.7
=1.25x10.6+2.5x34.7
=1.25×2×5.3+2.5×34.7
=2.5×（5.3+34.7）
=2.5×40
=100追问可以短一点吗？
全部回答
- 1楼网友：鱼忧
- 2021-11-28 01:24
1.25*（6.78+69.4+3.82）
- 2楼网友：神鬼未生
- 2021-11-27 23:59
1.25ⅹ6.78+25x3.47+125x0.0382=0.05*25ⅹ6.78+25*3.47+5*25*0.0382
=25*（0.339+3.47+0.191）=25*4=100
=25*（0.339+3.47+0.191）=25*4=100
- 3楼网友：逃夭
- 2021-11-27 22:48
1.25ⅹ6.78+25x3.47+125x0.0382（简便计算）
＝1.25*6.78+1.25*100*0.0382+25*3.47
＝1.25*（6.78+100*0.0382）+25*3.47
＝1.25*（6.75+3.82）+25*3.47
＝1.25*（10+0.5+0.07）+25*（4-0.5-0.03）
＝1.25*10+1.25*0.5+1.25*0.07+25*4-25*0.5-25*0.03
＝12.5+0.625+0.0875+100-12.5-0.75
＝13.125+0.0875+100-12.5-0.75
＝13.2125+100-13.25
＝99.9625
＝1.25*6.78+1.25*100*0.0382+25*3.47
＝1.25*（6.78+100*0.0382）+25*3.47
＝1.25*（6.75+3.82）+25*3.47
＝1.25*（10+0.5+0.07）+25*（4-0.5-0.03）
＝1.25*10+1.25*0.5+1.25*0.07+25*4-25*0.5-25*0.03
＝12.5+0.625+0.0875+100-12.5-0.75
＝13.125+0.0875+100-12.5-0.75
＝13.2125+100-13.25
＝99.9625
- 4楼网友：归鹤鸣
- 2021-11-27 21:48
原式=1.25x6.78+1.25x3.82+25x3.47
=1.25x(6.78+3.82)+1.25x6.94x10
=1.25x10.6+1.25x69.4
=1.25x(10.6+69.4)
=1.25x80
=100
=1.25x(6.78+3.82)+1.25x6.94x10
=1.25x10.6+1.25x69.4
=1.25x(10.6+69.4)
=1.25x80
=100
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