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`= 56 \times (27+35) \div 62`
`= 56 \times 62 \div 62`
`= 56 \times 1 = 56`
![](https://rs.olm.vn/images/avt/0.png?1311)
a, 197 635 + 81 324
b, 68 543 – 56 627
c, 178 x 241
d, 6420 : 321
![](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)
( 56 x 27 + 56 x 35 ) : 62
= 56 x ( 27 + 35 ) : 62
= 56 x 62 : 62
= 56 x ( 62 : 62 )
= 56 x 1
= 56
![](https://rs.olm.vn/images/avt/0.png?1311)
54 x 2 x 9 x 5
= 54 x 9 x 2 x 5
= 486 x 10
= 4860
246 x 62 + 246 x 38
= 246 x ( 62 + 38 )
= 246 x 100
= 24600
428 x 56 - 428 x 46
= 428 x ( 56 - 46 )
= 428 x 10
= 4280
54 x 2 x 9 x 5
= 108 x 45
= 4860
246 x 62 + 246 x 38
= 246 x ( 62 + 38 )
= 246 x 100
= 24600
428 x 56 - 428 x 46
= 428 x ( 56 - 46 )
= 428 x 10
= 4280
Chúc bạn học tốt nha !
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a.(4568+3759)-(4563+3764)
= 4568+3759-4563-3764
=(4568-4563)+(3759-3764)
=5+(-5)
=0
b.(56*27+56*35):62
=56*27+56*35:62
=56*(27+35):62
=56*62:62
=56*(62:62)
=56*1
=56
1624 : 56 + 62 x 30 - 197
= 29 + 1860 - 197
= 1889 - 197
= 1692
1624 : 56 + 62 X 30 - 197
= 29= 1860 - 197
=1889 - 197
=1692