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4m= 4 : 1000 = 0,004 km
12km68m= 12 + 68 : 1000 = 12 + 0,068 = 12,068 km
3km705m= 3 + 705 : 1000 = 3 + 0,705 = 3,705 km
785m= 785 : 1000 = 0,785 km
![](https://rs.olm.vn/images/avt/0.png?1311)
8025 kg = 8,025 tan
12km68m = 12,0068 km
5286 m = 5,286
2475 dm = 24,75 dam
9dam2 9m2 = 9,09 dam2
![](https://rs.olm.vn/images/avt/0.png?1311)
168cm=..1,68..m
75kg75g=..75,075.kg
25ha125m2=..25,0125.ha
360dm2 45cm2=.3,6000045..m2
45km2846m2=..45,000846.km2
12km68m=..12,068.km
9dam29m2=..9,009.dam2
2475dm=..24,75.dam
![](https://rs.olm.vn/images/avt/0.png?1311)
a)23,45hm=2,345km
3,45dam=0,0345km
b)2,345hm=0,2345km
34,5dam=0,345km
c)234,56m=0,23456km
2,3456m=0,0023456km
d)1234,5m=1,2345km
345,67m=0,34567km
![](https://rs.olm.vn/images/avt/0.png?1311)
1827m = 1km 827 m = 1,827km
2063m = 2km 63m = 2,063km
702m = 0km 702m = 0,702km.
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 4 km 56 m = 4,056 km
b) 6 km 7m = 6,007 km
c) 5km 45dm = 5,0045 km
d) 507m = 0,507 km
Đáp án:
a) 4km 56m = 4,056km
b) 6km 7m = 6,007km
c) 5km45dm = 5,45km
d) 507m = 0,507km
Chúc bạn hok tốt!
![](https://rs.olm.vn/images/avt/0.png?1311)
Bài giải
1) 7m4dm = 7,4m 9m5dm = 9,5m
2) 2m4cm = 2,04m 9m8cm = 9,08m
3) 6dm7cm = 0,67m 5dm3cm = 0,53m
5) 2dm = 0,2m 6dm = 0,6m
6) 2m = 200cm 4mm = 0,004m
7) 142m = 0,142km 275m = 0,275km
8) 4km7m = 4,007km 8km5m = 8,005km
9) 1465m = 1,465km 2764m = 2,764km
10) 2km145m = 2,145km 5km618 = ?km
(Câu 5km618 lỗi đề nha bạn)
![](https://rs.olm.vn/images/avt/0.png?1311)
4320 m=4 km 320 m=4,32 km
91502 dm=9 km 1502 dm=9,1502 km
chúc bạn học tốt+-*/
12km68m= 12,068km