174x1274-175x273-175
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![](https://rs.olm.vn/images/avt/0.png?1311)
175 . 1274 - 175 . 273 - 175
= 175 . 1274 - 175 . 273 - 175 . 1
= 175( 1274 - 273 - 1 )
= 175 . 1000
= 175 000
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 425 x 3475 + 425 x 6525
= 425 x (3475 + 6525)
= 425 x 10000
= 4250000
b) 175 x 1274 - 175 x 273 - 175
= 175 x 1274 - 175 x 273 - 175 x 1
= 175 x (1274 - 273 - 1)
= 175 x 1000
= 175000
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
( 175 + 52 + 13 ) - [ -15 + 175 - ( -25 )]
= ( 175 + 25 + 13 ) - ( -15 + 175 + 25 )
= 175 + 25 + 13 - 15 - 175 - 25
= -2
( 175 + 52 + 13 ) - [ -15 + 175 - ( -25 )]
= ( 175 + 25 + 13 ) - ( -15 + 175 + 25 )
= 175 + 25 + 13 - 15 - 175 - 25
= -2
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
Lời giải:
1. Bạn coi lại đề
2. $=234\times (1257-257)=234\times 1000=234000$
3. $=175\times (1274-273-1)=175\times 1000=175000$
4. $=(4\times 25)\times (125\times 8)=100\times 1000=100000$
![](https://rs.olm.vn/images/avt/0.png?1311)
\(174\) x \(1274-175\) x \(273-175\)
\(=221676-47775-175\)
\(=173726\)
= 174 .( 1274-273-1)
=174.1000
=174000