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Finding a map's scale

Teaching Transcript

🎙️

What is the scale of this map if 9 millimeters on the map represents 900 millimeters in reality?

Quite simply, map scales are a ratio of the map measurement to the measurement in reality.

So our scale, or ratio, of map to reality, is 9 millimeters to 900 millimeters.

If we simplify, that's 1 over 100 or a 1 to 100 scale.

This math skill teaches how to calculate the scale of a map by expressing the relationship between a distance on the map and the corresponding actual distance as a ratio, which can then be simplified to find the scale.

Skill Practice

Finding the scale of a map given map and actual distances, same units

Test your understanding of finding a map's scale by practicing it! Work through the below exercises to use it in practice.