Mathematics Class 6
Prime Time
Factors, multiples, primes and composites, quick divisibility tests, and common factors.
9 lessons · ~47 min total
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Lessons in this topic
- 0 Start here A roadmap: factors, multiples, primes and composites, quick divisibility tests. And common factors. · 3 min You are here
- 1 What is a factor? A factor divides a number exactly, leaving nothing over. · 5 min
- 2 Counting up in steps Multiples are what you get counting up in steps of a number. · 5 min
- 3 Primes: exactly two factors A prime has exactly two factors: 1 and itself. · 6 min
- 4 Composites: more than two factors A composite has more than two factors. And 1 fits neither group. · 5 min
- 5 Quick tests without dividing Quick tests that tell you a factor without dividing. · 6 min
- 6 Numbers that share factors Two numbers can share factors. The same number showing up on both factor lists. · 6 min
- 7 The big picture Six ideas, tied together. · 4 min
- 8 Track quiz Cheat-sheet table plus a reveal quiz — one question per idea. · 7 min
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