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📐 Mathematics - Class 7
Lesson 12 · Whole Numbers

HCF and LCM

MathematicsSubject
14 minEstimated read
Activity 12.3

Tile a real rectangle and prove the HCF is the answer

What you needSquared paper, a ruler and colouring pencils. Work in pairs.
MethodDraw a rectangle 24 by 18 squares. Try to fill it exactly with square tiles of side 2, 3, 4, 6, 8 and 12.
The pointSome sizes fit and some leave a strip. Look at the ones that work and see what they have in common.
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