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Question

Express as kilometre (km) using decimals:

(i) 5 m
(ii) 55 m
(iii) 555 m
(iv) 5555 m
(v) 15 km 35 m

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Solution

(i) 5 m
We know that 1000 m = 1 km.
Therefore, 1 m = 1/1000 km = 0.001 km.
5 m = 5/1000 = 0.005 km

(ii) 55 m
We know that 1000 m = 1 km.
Therefore, 1 m = 1/1000 km = 0.001 km.
55 m = 55/1000 = 0.055 km

(iii) 555 m
We know that 1000 m = 1 km.
Therefore, 1 m = 1/1000 km = 0.001 km.
555 m = 555/1000 = 0.555 km

(iv) 5555 m
We know that 1000 m = 1 km.
Therefore, 1 m = 1/1000 km = 0.001 km.
5555 m = 5555/1000 = 5.555 km

(v) 15 km 35 m
We know that 1000 m = 1 km.
Therefore, 1 m = 1/1000 km = 0.001 km.
15 km 35 m = 15 + 351000
=15.035 km

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