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a) 125 cm = 1,25 m = 12,5 dm
b) 15 m 24 cm = 15,24 m = 152,4 dm
c) 7 km 15 m = 7,015 km = 70150 dm = 701,5 dam
d) 4 cm 8mm = 4,8 cm = 0,48 dm = 0,048 m
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a ) 2,539m = 2m 5dm 3cm 9mm b ) 7,306m = 7m 3dm 6mm
= 2m 53cm 9mm = 7m 30cm 6mm
= 2m 539mm = 7m 306mm
= 2539mm = 7306mm
c ) 2,586km = 2km 586m d ) 8,2km = 8km 200m
= 2586m = 8200
![](https://rs.olm.vn/images/avt/0.png?1311)
2,539m= 2m 5dm 3cm 9mm
7,306m= 7m 3dm 6mm
2,586km= 2km 586m
8,2km= 8km 200m
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![](https://rs.olm.vn/images/avt/0.png?1311)
3mm=0.3cm
2hm=0.2km
8dm=0.8m
5mm=0.005
5cm=0.5m
13m=0.13m
2731cm=27m31cm
4005mm=40dm5mm
3mm = 3/10cm = 0, 3cm
2hm = 2/10km = 0, 2km
8dm = 8/10m = 0, 8m
5mm = 5/1000m = 0, 005m
5cm = 5/100m = 0, 05m
13m = 13/100hm = 0, 13hm
3cm 1mm = 31/1000m = 0, 031m
13 013m = 13km 13m
2731cm = 27m 31cm
4005mm = 40dm 5mm
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280mm
3120dm
30m
0,75dam
1050cm
15000m
45hm
18km
725cm
1m65dm
5058m
2km80m
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a. 123,9 ha =………12390000………………………km²
b. 36,9 dm² = ……0,369……………………… m²
c. 2 tấn 35 kg =……2,035………………..…..tấn
d. 21cm 3 mm = ….…21,3………………..……cm
152 dm =15200 mm
6325m = 6,325 km
8,05 m = 805 cm