75*4.7+15.9*25和6.11+9.22+8.33+7.44+5.55+4.56+3.67+2.78+1.89和172.4*6.2+2724*0.38怎么用简便方法解答
答案:2 悬赏:0 手机版
解决时间 2021-03-03 10:38
- 提问者网友：川水往事
- 2021-03-02 12:32
75*4.7+15.9*25和6.11+9.22+8.33+7.44+5.55+4.56+3.67+2.78+1.89和172.4*6.2+2724*0.38怎么用简便方法解答
最佳答案
- 五星知识达人网友：怀裏藏嬌
- 2021-03-02 12:40
75*4.7+15.9*25
=25*(4.7*3+15.9)
=25*30
=750
6.11+9.22+8.33+7.44+5.55+4.56+3.67+2.78+1.89
=(6.11+1.89)+(9.22+2.78)+(8.33+3.67)+(7.44+4.56)+5.55
=8+12+12+12+5.55
=49.55
172.4*6.2+2724*0.38
=172.4*6.2+1000*0.38+1724*0.38
=172.4*(6.2+3.8)+380
=1724+380
=2104
=25*(4.7*3+15.9)
=25*30
=750
6.11+9.22+8.33+7.44+5.55+4.56+3.67+2.78+1.89
=(6.11+1.89)+(9.22+2.78)+(8.33+3.67)+(7.44+4.56)+5.55
=8+12+12+12+5.55
=49.55
172.4*6.2+2724*0.38
=172.4*6.2+1000*0.38+1724*0.38
=172.4*(6.2+3.8)+380
=1724+380
=2104
全部回答
- 1楼网友：七十二街
- 2021-03-02 14:00
75*4.7+15.9*25=25*3*4.7+25*15.9=25*(14.1+15.9)=25*30=750
6.11+9.22+8.33+7.44+5.55+4.56+3.67+2.78+1.89
=(6.11+1.89)+(9.22+2.78)+(8.33+3.67)+(7.44+4.56)+5.55
=8+12+12+12+5.55=49.55
172.4*6.2+2724*0.38=1724*0.62+(1724+1000)*0.38=1724*0.62+1724*0.38+1000*0.38
=1724*(0.62+0.38)+380=1724*1+380=1724+380=2104
6.11+9.22+8.33+7.44+5.55+4.56+3.67+2.78+1.89
=(6.11+1.89)+(9.22+2.78)+(8.33+3.67)+(7.44+4.56)+5.55
=8+12+12+12+5.55=49.55
172.4*6.2+2724*0.38=1724*0.62+(1724+1000)*0.38=1724*0.62+1724*0.38+1000*0.38
=1724*(0.62+0.38)+380=1724*1+380=1724+380=2104
我要举报
如以上问答信息为低俗、色情、不良、暴力、侵权、涉及违法等信息，可以点下面链接进行举报！
大家都在看
推荐资讯