3,5 m=...... cm , 4 km =.... m, 5 hm =....mm, 100m =.... km, 100cm =.....dm

3,5 m = 3,5 x 100 = 350 cm
4km= 4 x 1000 = 4000 m
5 hm = 5 x 10.000 = 50.000 mm
100 m = 100 / 1000 = 0,1 km
100 cm = 100/10=10 dm

3,5 m = 350 cm
4 km =4000 m
5 hm =500000 mm
100 m = 0,1 km
100 cm = 10 dm