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1 m 2   =   1 100 d a m 2           1 d a m 2   =   1 100 h m 2

4 m 2   = 4 100   d a m 2       7 d a m 2   = 7 100   h m 2

38 m 2   = 38 100 d a m 2         52 d a m 2   = 52 100 h m 2

16m² 23dm²  =16,23m²                

631km² 7dam²  =  631,0007 km²       

8,54m²   = 8m² 54dm²

70dam² 2m²  = 70,02dam²       

4km² 7hm²  =4,07 km²           

2,15km²  = 2 km² 15 hm²

1m²=1\100dam²                                  4m²=4\100dam²

38m²=38\100dam²                              1dam²=1\100hm²

7dam²=7\100hm2                         52dam²=52\100hm²

1 m2 = 0.01 dam2

38 m2 = 0.38 dam2

7 dam2 = 0.07 hm2

4 m2 = 0.04 dam2

1 dam2 = 0.01 hm2

52 dam2 = 0.52 hm2

100          0,04

0,38         0,01

0,07         0,52

0,01 dam2

0,04 dam2

0,38 dam2

0,01 hm2

0,07 hm2

0,52 hm2

1m2= 1/ 100dam2

4m2= 4/ 100dam2

38m2= 38/ 100dam2

1dam2= 1/ 100hm2

7dam2= 7/ 100hm2

52dam2= 52/ 100hm2

1m2=..0,01...dam2

4m2=...0,04..dam2

38m2=...0,38..dam2

1dam2=..0,01...hm2

7dam2=.0,07..hm2

52dam2=..0,52..hm2

\(2dam^216m^2=2,16dam^2\)

\(\)\(46dam^25m^2=46,95dam^2\)

\(3km^24cm^2=30000,0004dam^2\)

\(32dam^29m^2=32,09dam^2\)

\(8dam^262m^2=8,62dam^2\)

\(16dam^229m^2=16,29dam^2\)

\(52dam^240m^2=52,4dam^2\)

\(13hm^224dm^2=1300,0024dam^2\)

16m2 = 1.6dam2

46dam2 5m2 = 465m2

3km2 4cm2 = 30004dam2

32dam2 9m2 = 329.9dam2

8dam2 62m2 = 862m2

16 dam2 29m2 = 1629m2

52dam2 40m2 = 5240m2

13hm2 24dm2 = 1324dam2

7218m² = 7dam² 218m²

16823m² = 16hm² 823m²

405dam² = 4hm² 5dam²

1 . 1412dm^2

2. 705 m^2

3. 1927 dam^2

4.72 dam^2 18 m^2

5. 168 hm^2  23 m^2

6. 4 hm^2 05dam^2

2,005

1,00005

6,007

18,0017

Đáp án

1. 2,005

2. 1,00005

3. 6,007

4. 18,0017

~HT~

Trả lời 

4ha - 25dam² = 100 dam² - 25 dam² = 75 dam²

7 dm² + 42 mm² = 10000 mm² + 42 mm² = 10042 mm²

4ha - 25dam2 = 375dam2

7dm2 + 42 mm2 = 70042 mm2

4ha-25dam2=375dam2