Finding Factors of Numbers
Year 8 Mathematics Understanding how to identify all factors of any number
What Are Factors?
A factor is a number that divides evenly into another number Factors come in pairs that multiply together Every number has at least two factors: 1 and itself Example: 6 = 1 × 6 and 6 = 2 × 3
Factor Detective Challenge
Find all factors of 18 Work in pairs Use division to check your answers List them in order from smallest to largest
Practice Together: Finding Factors of 36
{"left":"Start: 1 × 36 = 36\nTest: 2 × 18 = 36\nTest: 3 × 12 = 36\nTest: 4 × 9 = 36","right":"Test: 6 × 6 = 36\nStop at √36 = 6\nFactors: 1, 2, 3, 4, 6, 9, 12, 18, 36"}
Quick Check: Apply Your Knowledge
Challenge: Find all factors of 20 Use the systematic method How many factors does 20 have? Which factors are prime numbers?
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