20,22 : 0,5 + 20,22 : 0,2 + 20,22 : 0,25 + 20,22 x 89
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20,22: 0,125+ 20,22: 0,25- 20,22- 20,22
= 20,22: 0,125+ 20,22: 0,25- 20,22× 1- 20,22× 1
= 20,22× 8+ 20,22× 4- 20,22× 1- 20,22× 1
= 20,22× ( 8+ 4- 1- 1)
= 20,22× 10
= 202,2
![](https://rs.olm.vn/images/avt/0.png?1311)
a, 5,6 x 2 + 2,8 x 8 + 11,2 x 2 - 48,5
= 11,2 + 11,2 x 2 + 11,2 x 2 - 48,5
= 11,2 x ( 1 + 2 + 2 ) - 9,7 x 5
= 11,2 x 5 - 9,7 x 5
= ( 11,2 - 9,7 ) x 5
= 1,5 x 5
= 7,5
b, 20,22 : 0,5 + 20,22 : 0,125 + 20,22 x 90
= 20,22 x 2 + 20,22 x 8 + 20,22 x 90
= 20,22 x (2 + 8 + 90)
= 20,22 x 100
= 2022
#Fox
a, 5,6 x 2 + 2,8 x 8 + 11,2 x 2 - 46
= 5,6 x 2 + 2,8 x 2 x 4 + 11,2 x 2 - 23 x 2
= 5,6 x 2 + 11,2 x 2 + 11,2 x 2 - 23 x 2
= 2 x ( 5,6 + 11,2 + 11,2 - 23 )
= 2 x 5 = 10
b, 20,22 : 0,5 + 20,22 : 0,125 + 20,22 x 90
= 20,22 x 2 + 20,22 x 8 + 20,22 x 90
= 20,22 x ( 2 + 8 + 90 )
= 20,22 x 100 = 2022
![](https://rs.olm.vn/images/avt/0.png?1311)
`29 xx 20,22 + 15 xx 20,22 + 20,22 xx 44 + 24 xx 10,11`
`= 20,22 xx (29 + 15 + 44 + 12)`
`= 20,22 xx 100`
`= 2022`
![](https://rs.olm.vn/images/avt/0.png?1311)
20,22 x 50,7 + 20,22 x 48,3 + 20 + 0,22
= 20,22 x ( 50,7 + 48,3 + 1 )
= 20,22 x ( 99 + 1 )
= 20,22 x 100
= 2022
20,22X 50,7 + 20,22 X 48,3+ 20 + 0,22
= 20,22 x ( 50,7 + 48,3 +1)
=20,22 x 100
= 2022
![](https://rs.olm.vn/images/avt/0.png?1311)
20,22 × 35,75 + 20,22 × 62,25 + 40,44
= 20,22 × 35,75 + 20,22 × 62,2 5+ 20,22 × 2
= 20,22 × (35,75 + 62,25 + 2)
= 20,22 × 100
= 2022
![](https://rs.olm.vn/images/avt/0.png?1311)
20,22 × 35,75 + 20,22 × 62,25 + 40,44.
= 20,22 × 35,75 + 20,22 × 62,2 5+ 20,22 × 2.
= 20,22 × (35,75 + 62,25 + 2).
= 20,22 × 100.
= 2022.
20,22 × 35,75 + 20,22 × 62,25 + 40,44
= 20,22 × 35,75 + 20,22 × 62,2 5+ 20,22 × 2
= 20,22 × (35,75 + 62,25 + 2)
= 20,22 × 100
= 2022