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Các câu hỏi dưới đây có thể giống với câu hỏi trên
NC
7
![](https://rs.olm.vn/images/avt/0.png?1311)
9 tháng 7 2017
1000 + 90 + 10 + 200 + 300 + 80 + 20
= 1000 + ( 90 + 10 ) + ( 200 + 300 ) + ( 80 + 20 )
= 1000 + 100 + 500 + 100
= 1100 + 500 + 100
= 1600 + 100
= 1700
![](https://rs.olm.vn/images/avt/0.png?1311)
CC
9
![](https://rs.olm.vn/images/avt/0.png?1311)
CC
8
![](https://rs.olm.vn/images/avt/0.png?1311)
PL
2
![](https://rs.olm.vn/images/avt/0.png?1311)
AC
5
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LL
20 tháng 7 2016
20 x 20 = 400
40 x 40 = 1 600
60 x 60 = 3 600
80 x 80 = 6 400
100 x 100 = 10 000
ủng hộ mk nhé
AC
5
![](https://rs.olm.vn/images/avt/0.png?1311)
20 tháng 7 2016
20 × 20=400
40 × 40=1600
60 × 60 =3600
80 × 80=6400
100 × 100=10000
LD
13
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3 tháng 11 2021
bằng 300 nha
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MC
10
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300 nha !
=300 nha bạn???
Nếu thấy mình đúng thì tích hộ mình nha