![](https://rs.olm.vn/images/avt/0.png?1311)
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![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
6 dam + 15dam = 21dam 16hm – 9hm = 7hm
52dam + 37dam = 89dam 76dam – 25dam = 51 dam
48dam + 23dam = 71dam 63hm – 18hm = 45hm
![](https://rs.olm.vn/images/avt/0.png?1311)
8 dam + 5 dam = 13 dam
57 hm – 28 hm = 29 hm
12 km x 4 = 48 km
![](https://rs.olm.vn/images/avt/0.png?1311)
8 hm = 800 m
8 m = 80 dm
9 hm = 900 m
6 m = 600 cm
7 dam = 70 m
8 cm = 800 mm
3 dam = 30 m
4 dm = 400 mm.
8 hm = 800 m
8 m = 80 dm
9 hm = 900 m
6 m = 600 cm
7 dam = 70m
8 cm = 800mm
3 dam = 30 m
4 dm = 400 mm
![](https://rs.olm.vn/images/avt/0.png?1311)
1km = 10 hm
1m = 10 dm
1km =1000 m
1 m =100 cm
1 hm =10 dam
1 m = 1000 mm
1hm =100 m
1 dm =10 cm
1 dam =10 m
1 cm =10 mm.
![](https://rs.olm.vn/images/avt/0.png?1311)
15dam 5m = 155m
3km 5dam = 3005dam
7hm 50m = 120m
6m 7dm = 67dm
2km 5dam = 2005dam
20km 5hm = 205hm bạn nhé
_HT_
![](https://rs.olm.vn/images/avt/0.png?1311)
1 hm = 10 dam
1 km = 1000 m
1 hm = 100 m
10 m = 1 dam
100 m = 1 hm
10 cm = 1 dm
= 5 ha 1 dam
51 dam = 5hm 1 dam