Keeping a measurement constant when converting units
A different number of centimetres or metres can describe the same length. Smaller units require more units. Use this relationship to explain the conversion factor.
Try it yourself first.
Cut 75 centimetres from a 2.4-metre rope. Write the remaining length in centimetres and metres.
View the solution or example answer
2.4 metres is 240 centimetres. 240 − 75 = 165 centimetres, or 1.65 metres. Use a common unit before subtracting.
Your next step.
Choose a common unit first and mark the final unit the question requests. Explain why a larger unit needs a smaller number to make sense of multiplying or dividing.
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