Video

Scale drawing: centimeters to kilometers (Full video)

Khan Academy

Supporting grades: 7

Description: Sal uses ratios to figure out how far apart two cities should be on a map. Created by Sal Khan. If the distance between two cities is 60 kilometers how far apart in centimeters are the two cities on the map? For every 10 kilometers in the real world, the map is going to show 7 centimeters. So how far apart in centimeters are the two cities on the map?

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