1km2 =   1000000 m2

50000 cm2 = 5 m2      

1km2     305 m2       = 1000305 m2

3/ 10 m2   =30 dm2

k cho mình nha bn

1km2 = 100 ha

1km2 = 1000000 m2

1 ha = 10000 m2

1m2 =            0,0001  ha

1 ha =     0,01 km2

9 ha = 0,09 km2

1km2 = 100 ha

1km2 =1000000m2

1ha = 10000m2

1m2 =0,0001ha

1ha =0,01km2

9ha =0,09km2

ban lam dung roi

ok good

$a)$

$\circ 1m^2=100d{m}^2=10000c{m}^2=1000000m{m}^2$

GT: $1m^2=100d{m}^2$

$1d{m}^2=100c{m}^2$

$1c{m}^2=100m{m}^2$

$\circ 1ha=10000m^2$

$\circ 1k{m}^2=100ha=1000000m^2$

$b)$

$\circ 1m^2=0,01da{m}^2$

$\circ 1ha=0,01k{m}^2$

$\circ 1m^2=0,0001h{m}^2=0,0001ha$

GT: $h{m}^2=ha$

$\circ 4ha=0,04k{m}^2$

GT: $1ha=0,01k{m}^2$

$\circ 1m^2=0,000001k{m}^2$

a, 1m² = 100 dm² = 10000 cm² = 1000000 mmm²

   1ha = 10000 m² 

   1km² = 100 ha = 1000000m²

b, 1m² = \(\dfrac{1}{100}\) dam²

    1m² = \(\dfrac{1}{10000}\) hm² = \(\dfrac{1}{10000}\)ha

      1m² = \(\dfrac{1}{1000000}\)km²

         4ha = \(\dfrac{4}{100}\)km² = \(\dfrac{1}{25}\)km²

3m2 21dm2=...321....dm2
1km2 500000m2=.....1500000..m2
2km2 345m2=....2000345......m2

3m2  21dm2=321dm2

1km2  500000m2=1 500 000m2

2km2  345m2=2 000 345m2

`3m^2  21dm^2 = 3xx100 + 21=321dm^2`

`1km^2 5500000m^2 = 1xx1000000 + 500000 = 1500000  m^2`

` 2km^2 345m^2 = 2xx1000000 + 345 = 2000345 m^2`

1 k m 2   = 1000000 m 2     1 h a   =   10000 m 2

1000000

1km² = 1000000 m²

nhanh nhé

5dm2 18cm2 = 518cm2

1m2 38dm2 = 138dm2

16m2 = 160000cm2

1km2 = 1000000m2

12km2 376m2 = 12000376m2

Học tốt!

1km^2 635m^2=1000000+635(m^2)=1000635m^2

2/5m^2=2/5*10000cm^2=4000cm^2

1km² = 1 000 000m² 
36dm² = 3600cm²

1km2 =10000m2

36 dm2 =3600cm2

\(1 000 000\) m2
\(36 00 m\)²