5.1.7 Length in the Metric System

Activity symbol Activity: Units of Length

(a) Write 327 centimeters as meters.

Hint symbol

Discussion

How many centimeters are in 1 meter? It’s okay to go back to the previous screen and look at the diagram at the bottom.

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Answer

(a) There are 100 cm in 1 m and we are converting from a small unit to a large unit, so we divide by 100 to change cm into m.

Hence, 327 cm equation left hand side equals right hand side 327 division 100 m equals 3.27 m.

(b) Write 6.78 meters as centimeters.

Solution symbol

Answer

(b) There are 100 cm in 1 m. This time, we are converting from a large unit to a smaller unit, so we multiply by 100.

So, 6.78 m equation left hand side equals right hand side 6.78 multiplication 100 cm equals 678 cm.

Want a quick reference? This website [Tip: hold Ctrl and click a link to open it in a new tab. (Hide tip)] can help remind you how many of the metric units work.

5.1.6 Working with a Common Unit

5.1.8 Prefixes in the Metric System