Hogyan lehet könnyen megtanulni a mértékegység átváltást?

Valahogy így:

1.) v = 18 km/h =18*1000m/h = 18000m/h = 18000m/(3600s) = 18000/3600 m/s = 5 m/s

2.) v = 30 m/s = 30/1000km/s = 30/1000km/(1/3600h) = 30/1000km*1/(1/3600h) =

= 30/1000km*3600/h = 30/1000*3600 km/h = 30*3600/1000 km/h = 108 km/h

3.) 15 m² = 15 m*m = 15*(100 cm)*(100 cm) = 15*100*100 cm*cm = 150000 cm*cm =

= 150000 cm²

4.) 30 m³ = 30*(10 dm)*(10 dm)*(10 dm) = 30*10*10*10 dm³ = 30 000 dm³

30 000 dm³ = 30 000*(10 cm) *(10 cm) *(10 cm) = 30 000 000 cm³

5.) 12 525 mm² = 12 525*(1/10 cm)*(1/10 cm) = 12 525*1/10*1/10 (cm*cm) =

= 125,25 cm²

6.) 365 825 cm³ = 365 825*(1/10 dm)*(1/10 dm)*(1/10 dm) =

= 365 825*1/10*1/10*1/10 (dm*dm*dm) = 365 825*1/1000 dm³ = 365,825 dm³

365,825 dm³ = 365,825*(1/10 m)*(1/10 m)*(1/10 m) =

= 365,825*1/10*1/10*1/10 (m*m*m) = 365,825*1/1000 m³ = 0,365825 m³