`5km^2 = 5xx1000000=5000000m^2`

`3/10m^2=3/10xx100=30 dm^2`

`2400 dm^2=2400xx1/100=24 m^2`

`6m^2 7dm^2= 6xx100+7=607 dm^2`

`5km^2 =  5000000   m^2`            `3/10m^2 = 30dm^2 `                    `2400dm^2 =24 m^2`                `6m^2 7dm^2 = 607dm^2`

5km2=5000000m2

3/10m2=30dm2

2400dm2=24m2

6m2

7dm2=7dm2

7km2 = ........`7` `000` `000`............. m2

b) 6000000m2 = ..........`6`.......... km2

40km2 = .......`40` `000` `000` ............. m2

250dm2 = ......`25000`....................cm2

247600cm2 = ..........`2476`... dm2

10m2 = ................`100` `000`............ cm2

a) 7000000 b) 6
c) 40000000 
d) 25000 
e) 2476
h) 100000

7km² = 7 000 000 m²

b) 6000000m² =  km²

40km² =    m²

250dm² = cm²

247600cm² =  dm²

10m² = 000

12m2 8dm2=12,08 m2

9km2 17hm2=9,17 km2

10m2 10dm2=10,1m2

4352m2=0,4352 km2

C

C

C

Hướng dẫn giải:

a)

b)

10 m 2 = 1000 d m 2 3 m 2 = 300 d m 2 200 d m 2 = 2 m 2 10 m 2 = 100000 c m 2 8 m 2 = 80000 c m 2 90000 c m 2 = 9 m 2