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Education Concept Tracker

A prerequisite knowledge graph of 1590 learning concepts across 8subjects. Track what you've mastered and see exactly what you're ready to learn next — the topics whose prerequisites you've already met. Built on the Marble Open Skill Taxonomy.

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Factors, multiples, and primes

Mathematics · Multiplication & Division · conceptual

Find all factor pairs for a whole number in the range 1–100; identify common factors and common multiples of two numbers; use these concepts to solve problems

What mastery looks like

  • List all factor pairs of 36: (1,36), (2,18), (3,12), (4,9), (6,6)
  • State the first five multiples of 7
  • Find the common factors of 24 and 36
  • Find all common factors of 36 and 48
  • Identify the first three common multiples of 6 and 8
  • Determine whether a given number (e.g. 97) is prime and justify the reasoning

Check your understanding

Can Factors, multiples, and primes list all the factor pairs for a number like 36 — (1, 36), (2, 18), (3, 12), (4, 9), (6, 6) — and find factors that two numbers share?