35 . 12.173 + 12.37 bằng cách thuật tiện
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(53,68-37.63-12.37\)
\(=53,68-\left(37.63+12.37\right)\)
\(=53,68-\left[37\left(63+12\right)\right]\)
\(=53,68-\left[37.75\right]\)
\(=53,68-2775\)
\(=\text{-2721.32}\)
53,68-37.63-12.37=53,68-[37.(63+12)]
=53,68-(37.75)
=53,68-2775
=-2721.32
![](https://rs.olm.vn/images/avt/0.png?1311)
a. 45.34 + 45.37 + 71.23 + 33.71
= 45.(34 + 37) + 71.(23 + 33)
= 45.71 + 71.56
= 71.(45 + 56)
= 71 . 101
= 7171
a) \(45.34+45.37+71.23+33.71=45\left(34+37\right)+71\left(23+33\right)=45.71+71.56=71\left(45+56\right)=71.101=7171\)
b) \(23.46+23.52+98.35+98.42=23\left(46+52\right)+98\left(35+42\right)=23.98+98.77=98\left(23+77\right)=98.100=9800\)
c) \(27.34+27.56+90.20+26.90=27\left(34+56\right)+90\left(20+26\right)=27.90+90.46=90\left(27+46\right)=90.73=6570\)
d) \(12.37+12.78+115.29+115.59=12\left(37+78\right)+115\left(29+59\right)=115.12+115.88=115\left(12+88\right)=115.100=11500\)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
`[` Tham Khảo `]`
`35 xx 5 - 35 xx 2 + 35 xx7`
`= 35 xx (5-2+7)`
`= 35 xx 10`
`=350`
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(=12\left(173+37\right)=12\cdot210=2520\)