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![](https://rs.olm.vn/images/avt/0.png?1311)
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)
1 mm2 = 0,01 cm2
1 mm2 = 0,0001 dm2
1 mm2 = 0,000001 m2
1mm = 0,1 cm
1mm = 0,01 dm
1mm = 0,001 m
1 mm2 = 0,01 cm2
1 mm2 = 0,0001 dm2
1 mm2 = 0,000001 m2
1 mm = 0,1 cm
1 mm = 0,01 dm
1 mm = 0,001 m
![](https://rs.olm.vn/images/avt/0.png?1311)
2,586 km = 2586m = 2586000 mm
8,2 m = 82 dm = 820 cm
( còn cái km và m kia là giống đề bài )
![](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
![](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
![](https://rs.olm.vn/images/avt/0.png?1311)
300 mm2 = 3 cm2
500 cm2 = 5 dm2
700 dm2 = 7 m2
6 000 000 mm2 = 6 m2
6 m2 = 6 000 000 mm2
200 mm2 = 2 cm2
40 000 mm2 = 4 dm2
![](https://rs.olm.vn/images/avt/0.png?1311)
6017 dm=.......601,7.......m=...60,17..........dam.
0,45 dam=.....0,045........km=......45.......m.
62,64 m=......0,6264........hm=......0,06264........km.
79,734mm=.....0,79734.........m=.....0,00079734........km.
50000 km=.....5000000......dam=.......5000000000.......cm.
0,00008 m=......0,0000008.......hm=.....0,08........mm.
6017dm=601,7m=60,17dam
0,45dam=0,0045km=4,5m
62,64m=0,6264hm=0,06264km
79,734mm=0,079734m=0,000079734
50000km=5000000dam=50000000000cm
0,00008m=0,0000008hm=0,08mm
chuc bạn hoc tot!
![](https://rs.olm.vn/images/avt/0.png?1311)
6,4723 m2 = 64,723 dm2 = 647,23 cm 2 = 6472,3 mm2
Học tốt nha em !!!
ko biết chr lời huhu
2,539m=25,39dm=253,9cm=2539mm
7,306m=73,06dm=730,6cm=7306mm