a) 4 m2 = 40000 cm2     m2 = 50dm2

16 m2 = 1600 dm2     dm2 = 50 cm2

308 dm2 = 30800cm2     m2 = 100 cm2

b) 700 cm2 = 7 dm2    15 m2 9 dm2 = 1509 dm2

3400 dm2 = 34 m2    7 dm2 25 cm2 = 725 cm2

50 000 cm2 = 5 m2    28 m2 50 cm2 = 280050 cm2

c) 948 dm2 = 9 m2 48 dm2    8791 dm2 = 87 m2 91 dm2

705 cm2 = 7 dm2 5cm2     30 045 cm2 = 3 m2 45 cm2

a 4 m² =40000 cm²

b 1/2 m² =50 dm ²

bằng  

4 m²=40000m²     

a) 15m2 = 150000cm2           m2 = 10dm2

103m2 = 10300dm2           dm2 = 10cm2

2110dm2 = 211000cm2          m2 = 1000cm2

1m2 = 100 dm2

400 dm2 = 4 m2

100dm2 = 1 m2

2110 m2 = 211000 dm2

1m2 = 10000 cm2

15m2 = 150 000cm2

10 000 cm2 = 1 m2

1dm22cm2 = 1002 cm2

\(8791dm^2=87m^291dm^2\)

\(18dm^25cm^2=1805cm^2\)

\(5308dm^2=53m^28dm^2\)

\(4dm^2=400cm^2\)

\(3m^26dm^2=306dm^2\)

8791 dm2 = 87 m2 91 dm2

18 dm2 5cm2 = 1805 cm2

5308 dm2 = 53 m2 8dm2

4dm2 = 400 cm2

1 m 2 = 100 d m 2            1 k m 2  = 1000000 m 2

1 m 2  = 10000 c m 2       1 d m 2  = 100 c m 2

Bài 2

3734x37=138,158              

 12054x24=289,296

 21 346 × 400=8,538,400

Bài 2

3734x37=138,158              

 12054x24=289,296

 21 346 × 400=8,538,400

198 cm² = 1 dm² 98 cm² 

2080 dm² = 20 m² 80dm²

198 cm² = 1dm² 98cm²
  2080 dm² = 20 m² 80dm² 
 

198 cm^2 = 1 dm^2 98 cm^2

2080 dm^2 = 20 m^2 80 dm^2

a) 2 m² = 200 dm²                    b) 1 m² = 10000 cm²

c) 1 km² = 1000000 m²             d) 36 dm² = 3600 cm²

e) 508 dm² = 50800 cm²           g) 3100 cm² = 31 dm²

h) 2007 cm² = 20 dm² 7 cm²     k) 6 dm² = 600 cm²

a.2m²=200dm²

b.1m2=10000cm²

c.1km²=1000000m²

d.36dm²=3600cm²

e.508dm²=50800cm²

g.3100cm²=31dm²

h.2007cm²=20dm²7cm²

k.6dm²=600cm²

6m2 = 600dm2     990m2 = 99000dm2

11m2 = 110000cm2     500dm2 = 5m2

2500dm2 = 25m2     15dm22cm2 = 1502 cm2