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1282+2005-3546+4218-454+995
=(1282+4218)+(2005+995)-(3456+454)
=5500+3000-4000
=4500
1282+2005-3546+4218-454+995
=(1282+4218)+(2005+995)-(3456+454)
=5500+3000-4000
=4500
![](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)
= (1282 + 4218) + (2005 + 995) - ( 3546 + 454)
= 5500 + 3000 - 4000
= 4500
1282+2005-3546+4218-454+995
= (1282+4218)+(2005+995)-(3546+454)
= 6000+3000-4000
=9000-4000
=5000
![](https://rs.olm.vn/images/avt/0.png?1311)
\(1.\) 12 x 11 + 21 x 11 x 11 + 11 x 33
= ( 12 x 11 ) + ( 21 x 11 x 11 ) + ( 11 x 33 )
= \(132+2541+363\)
= \(3036\)
132x11-11x32-54x11
= ( 132 x 11 ) - ( 11 x 32 ) - ( 54 x 11 )
\(=1452-352-594\)
= \(506\)
\(2.\)
45 x 32 + 1245
= ( 45 x 32 ) + 1245
= 1400 + 1245
= 2685
75 x 18 + 75 x 21
= ( 75 x 18 ) + ( 75 x 21 )
= 1350 + 1575
= 2925
12 x (27+46) -1567
= 12 x 73 - 1567
= ( 12 x 73 ) - 1567
= 876 - 1567
= - 691
![](https://rs.olm.vn/images/avt/0.png?1311)
\(35600:25:4\)
\(=35600:\left(25\times4\right)\)
\(=35600:100\)
\(=356\)
![](https://rs.olm.vn/images/avt/0.png?1311)
123 × 97 + 2 × 123 + 123 = 123 x ( 97 + 2 + 1) = 123 x 100 = 12300
123 x 97 + 2 x 123 + 123
= 123 x 97 + 2 x 123 + 123 x 1
= 123 x ( 97 + 2 +1 )
= 123 x 100
= 12300.
N H Ớ T I C K C H O M Ì N H N H A
~ HT~
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Bạn ơi bằng 4500 nha