Question

22m=.......dm

17cm=......mm

84m=........km

35dm=.......cm

3mm=.........m

3mm=.....cm

Answer 1

22m=220dm 
17cm=170mm
84m=84/1000 km
35dm=350cm
3mm=0,3cm

Answer 2

22 m=220 dm

17 cm=170mm

84m=0,084 km

35 dm=350cm

3mm=0,003m

3mm=0,3cm