COMPOSITE VS PRIME

Sort numbers into prime and composite categories confidently.

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PRIME VS COMPOSITE NUMBERS

Numbers with exactly 2 factors are prime. Numbers with more than 2 factors are composite. The number 1 is special - it is neither prime nor composite because it has only one factor. Every whole number greater than 1 is either prime or composite.

Sort: 4, 7, 9, 11, 15, 17

1Prime: 7, 11, 17 (2 factors each)

2Composite: 4, 9, 15 (more than 2 factors)

3Special: 1 is neither!

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LEADER TIP

Sorting activities work brilliantly. Give students number cards and two hoops: Prime and Composite. Discuss the tricky ones.

BEFORE THIS LESSON, TRY

What Are Primes?

PRACTICE WITH THESE GAMES

Prime Hunt

Factor Finder

Number Balloons

Want more practice? Generate printable worksheets with similar problems.

Go to Worksheets

COMPOSITE VS PRIME

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COMPOSITE VS PRIME