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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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Mixed numbers and improper fractions

Mathematics · Fractions · procedural

Recognise mixed numbers and improper fractions; convert from one form to the other (e.g. 2/5 + 4/5 = 6/5 = 1 1/5)

What mastery looks like

  • Convert 11/4 to 2 3/4
  • Convert 3 2/5 to 17/5
  • Write 6/5 + 4/5 = 10/5 = 2 as both improper fraction and whole number

Check your understanding

If Mixed numbers and improper fractions sees the fraction 9/4, can they convert it to a mixed number — and then turn 2 and 3/5 back into an improper fraction?