HCF and LCM

MathematicsSubject

14 minEstimated read

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Lesson 12 topics

Squares and Square Roots Cubes and Cube Roots HCF and LCM Binary and Base Five Numbers

Quick Facts

Lesson: 12: Whole Numbers
Topic: HCF and LCM
Domain: Number

The HCF is the largest number that divides into both; the LCM is the smallest number both divide into. One looks down, the other looks up.

Study Tip

Before calculating, ask whether the answer should be smaller or bigger than the numbers you were given. That one question decides which method you need.