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9900 : 36 - 15 x 11
= 275 - 165
= 110
9700 : 100 + 36 x 12
= 97 + 432
= 529
( 15792 : 336 ) x 5 + 27 x 11
= 47 x 5 + 297
= 235 + 297
= 532
( 160 x 5 - 25 x 4 ) : 4
= ( 800 - 100 ) : 4
= 700 : 4
= 175
1036 + 64 x 52 - 1827
= 1036 + 3328 - 1827
= 4364 - 1827
= 2537
215 . 869 + 215 . 14
= 215 . ( 869 + 14 )
= 215 . 883
= 189945
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
108*(23+7)=180*30=5400
215*86+215*14=215*(86+14)=215*100=21500
53*128-43*128=128*(53-43)=128*10=1280
mk đúng nha
108 x ( 23 + 7 )
= 108 x 30
= 3240
215 x 86 + 215 x 14
= 215 x ( 86 + 14 )
= 216 x 100
= 21600
53 x 128 - 43 x 128
= ( 53 - 43 ) x 128
= 10 x 128
=1280
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 215 x 86 + 215 x 14
= 215 x (86 + 14)
= 215 x 100
= 21500
b) 53 x 128 - 43 x 128
= ( 53 - 43) x 128
= 10 x 128
= 1280
215*86+215*14=215*(86+14)
=215*100
=21500
53*128-43*128=128*(53-43)
=128*10
1280
mình mình lại
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 36 x 25 x 4 = 36 x ( 25 x 4) = 36 x 100 = 3600
18 x 24 : 9= 24 x ( 18:9) = 24 x 2 = 48
41 x 2 x 8 x 5= 41 x 8 x ( 5x2) = 41 x 8 x 10 = 3280
b) 108 x (23 + 7)= 108 x 30 = 3240
215 x 86 + 215 x 14 = 215 x ( 86 + 14) = 215 x 100 = 21500
53 x 128 – 43 x 128= 128 x ( 53 - 43) = 128 x 10 = 1280
![](https://rs.olm.vn/images/avt/0.png?1311)
1. 36 x 25 x 4
= 36 x 100
= 3600
2. 18 x 24 : 9
= 18 : 9 x 24
= 2 x 24
= 48
3. 41 x 2 x 8 x 5
= 41 x 8 x 10
= 328 x 10
= 3280
4. 108 x (23+7)
= 108 x 30
= 3240
5. 215 x 86 + 215 x 14
= 215 x (86+14)
= 215 x 100
= 21500
6. 53 x 128 - 43 x 128
= (53-43) x 128
= 10 x 128
= 1280
53 x 128 - 43 x 128
=6 784 - 5 504
=1280
53x128-43x128
=(53-43)x128
=10x128
=1280