a)

$1km={10}^{\square }m$

$\square =3,$

ponieważ:

${10}^{3}m=1000m=1km$

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$1m={10}^{\square }cm$

$\square =2,$

ponieważ:

${10}^{2}cm=100cm=1m$

$\underline{}$

  $1km={10}^{\square }cm$  

$\square =5,$

ponieważ:

${10}^{5}cm=100000cm=1000m=1km$

$\underline{\underline{}}$

b)

$1t={10}^{\square }kg$

$\square =3,$

ponieważ:

${10}^{3}kg=1000kg=1t$

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$1kg={10}^{\square }g$

$\square =3,$

ponieważ:

${10}^{3}g=1000g=1kg$

$\underline{}$

$1t={10}^{\square }g$

$\square =6,$

ponieważ:

${10}^{6}g=1000000g=1000kg=1t$

$\underline{\underline{}}$

c)

$1k{m}^2={10}^{\square }{m}^2$

$\square =6,$

ponieważ:

${10}^6{m}^2=1000000m^2=1k{m}^2$

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$1m^2={10}^{\square }c{m}^2$

$\square =4,$

ponieważ:

${10}^{4}c{m}^2=10000c{m}^2=1m^2$

$\underline{}$

$1k{m}^2={10}^{\square }c{m}^2$

$\square =10,$

ponieważ:

${10}^{10}c{m}^2=10000000000c{m}^2=1000000m^2=1k{m}^2$