\(3m^221dm^2=321dm^2\)

\(1m^245cm^2=10045cm^2\)

\(1km^2500000m^2=1500000m^2\)

\(20km^2=20000000m^2\)

\(2km^2345m^2=2000345m^2\)

\(1m^22345cm^2=12345cm^2\)

\(3m^221m^2=2400dm^2\)

\(1m^245cm^2=10045cm^2\)

\(1km^2500000m^2=1500000m^2\)

\(20km^2=20000000m^2\)

\(2km^2345m^2=2000345m^2\)

\(1m^22345cm^2=12345cm^2\)

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`

\(1m^245cm^2=10045cm^2\)
\(20km^2=20000000m^2\)
\(1m^22345cm^2=12345cm^2\)

nhanh nhé

5dm2 18cm2 = 518cm2

1m2 38dm2 = 138dm2

16m2 = 160000cm2

1km2 = 1000000m2

12km2 376m2 = 12000376m2

Học tốt!

1m2= 100dm2

1m2=10000cm2

1km2=1000000m2

1dm2=100cm2

1 m2 = 100 dm2

1 m2 = 10000 cm2

1 km2 = 1000000 m2

1 dm2 = 100 cm2

1m² = 100dm²

1m² = 10 000cm²

1km² = 1 000 000m²

1dm² = 100cm²

~ Chúc bạn học tốt ~

$a)$

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

GT: $1m^2=100d{m}^2$

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

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

$\circ 1ha=10000m^2$

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

$b)$

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

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

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

Bn ơi bn ko nên hỏi nhìu như vậy đâu.

3m²5cm² = 305dm²

1m² 4cm² = 10004cm²

6300dm² = 63m²

1m² 4dm² = 10400cm²

TL:
a) 3m2 24dm2 = 324dm2                                      b) 1km2 500 000m2 = 1 500 000m2

2m2 1dm2 = 201dm2                                                2km2 345m2 = 2 000 345m2.

1m2 2 345 cm2 = 10 345cm2

1m2 45cm2 = 10 045cm2

HT.