Exercise
1) Subtract the following unit of length .

a) 20 cm -5 cm
cm
b) 20 cm - 5 mm
cm mm
c) 5 m - 2 m
m
d) 5 m - 20 cm
mcm
e) 5 km - 2 km
km
f) 5 km - 200 m
kmm
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