
Kenneth S. answered 03/12/18
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Expert Help in Algebra/Trig/(Pre)calculus to Guarantee Success in 2018
The metric system is really easy; You have to know that kilo means 1000, so if you change to km from just m, the number has to be divided by 1000 in order to account for having the kilo prefix to meters.
150 m = 0.150 km.
You need to review this topic rather than ask questions about m, cm, km, etc.