FACTORS & PRIMES

List all factors of a number and identify which are prime.

L5L6

Section 1 / 2

FINDING ALL FACTORS

Factors are numbers that divide evenly into another number. To find all factors of 12: try 1 (1×12✓), 2 (2×6✓), 3 (3×4✓), 4 (already found). Factors come in pairs! Once the pairs start repeating, you have found them all.

Find all factors of 12

11 × 12 = 12

22 × 6 = 12

33 × 4 = 12

4Factors: 1, 2, 3, 4, 6, 12

= 6

LEADER TIP

Use factor pairs systematically. Start from 1 × n, then 2 × ?, then 3 × ?. Stop when pairs start repeating.

BEFORE THIS LESSON, TRY

What Are Primes?

Equal Sharing

PRACTICE WITH THESE GAMES

Factor Finder

Prime Hunt

Division Table

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CONTINUE WITH:

Prime Factorization

FACTORS & PRIMES

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FACTORS & PRIMES