Question

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Answer 1

1) in cm :
a) 20 mm = 2 cm
    60 mm = 6 cm
   300 mm = 30 cm
    670 mm = 67 cm

b) 4 dm = 40 cm
   20 dm = 200 cm
   5 dm 3 cm  = 53 cm
   7 dm 4 cm = 74 cm

2) in dm :
a) 60 cm = 6 dm
   430 cm = 43 dm
   530 cm = 53 dm
   1190 cm = 119 dm

b) 6 m = 60 dm
   7 m 3 dm = 73 dm
   9 m 8 dm = 98 dm
   6 m 80 cm = 68 dm

3) in m :
a) 60 dm = 6 m
   500 dm = 50 m
   280 dm = 28 m
   960 dm = 96 m

b) 60 km = 60000 m
     75 km = 75000 m
    4 km 6 m = 4006 m
    9 km 25 m = 9025 m

4) a) 500 mm = 5 dm
        500 dam = 5 km
       
b) 3600 dm = 36 dam
          6 hm = 60000 cm  

c) 6300 cm = 63 m
        90 hm = 9000 m