7.5*46.7+59.9*2.5的简便计算怎么写
答案:4 悬赏:20 手机版
解决时间 2021-02-04 23:51
- 提问者网友：难遇难求
- 2021-02-04 02:29
7.5*46.7+59.9*2.5的简便计算怎么写
最佳答案
- 五星知识达人网友：走死在岁月里
- 2021-02-04 02:42
7.5*(50-3.3)+(60-0.1)*2.5
=7.5*50-3.3*7.5+60*2.5-0.1*0.25
=2.5*150+60*2.5-9.9*2.5-0.1*2.5
=210*2.5-10*2.5
=200*2.5
=500
=7.5*50-3.3*7.5+60*2.5-0.1*0.25
=2.5*150+60*2.5-9.9*2.5-0.1*2.5
=210*2.5-10*2.5
=200*2.5
=500
全部回答
- 1楼网友：雾月
- 2021-02-04 05:21
2.5*(3*46.7)+2.5*59.9=2.5*140.1+2.5*59.9=2.5*(140.1+59.9)=2.5*160=2.5*4*40=400
- 2楼网友：往事埋风中
- 2021-02-04 03:58
7.5*46.7+59.9*2.5=2.5*(3*46.7+59.9)=2.5*(140.1+59.9)=2.5*200=500
- 3楼网友：归鹤鸣
- 2021-02-04 03:44
7.5*46.7+59.9*2.5
=2.5×3×46.7+59.9×2.5
=2.5×140.1+59.9×2.5
=2.5×(140.1+59.9)
=2.5×200
=500
=2.5×3×46.7+59.9×2.5
=2.5×140.1+59.9×2.5
=2.5×(140.1+59.9)
=2.5×200
=500
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