HUNTERTUTORING

Study Guide — 3.OA.A.4

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Determine the unknown whole number in a multiplication or division eq…

Understand multiplication as equal groups and division as sharing or grouping.

What this standard means

  • Determine the unknown whole number in a multiplication or division equation relating three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 _ ? = 48, 5 = _ Ö 3, 6 _ 6 = ?
  • Apply determine the unknown whole number in a multiplication or division eq… with models and explanation
  • Models multiplication as equal groups or arrays

_See printable PDF for diagram._

How to use the 20 practice sets

| Sets | When to use | | --- | --- | | 1–5 | Intro — explore together, short written items | | 6–10 | Core skills — diagrams and written practice | | 11–15 | Mixed review — explain thinking | | 16–20 | Stretch — word problems and mastery tasks |

Pacing: 10–15 minutes per session.

How to practice

1. Draw arrays for multiplication 2. Use repeated addition to explain products 3. Connect division to missing-factor multiplication

_See printable PDF for diagram._

Common mistakes

  • Confusing multiplication with addition
  • Unequal groups in array models

Review and practice tests

1. Start Review 1/10 when sets 1–3 feel comfortable. 2. Move up one review level with little help. 3. Use Practice Test 4/10–6/10 for mid-standard checks. 4. Practice Test 10/10 is the mastery bar for 3.OA.A.4.

  • [ ] Models multiplication as equal groups or arrays
  • [ ] Solves division as sharing or grouping
  • [ ] Relates multiplication and division facts

Materials for this standard

  • Practice Problems — 20 printable sets
  • Review — 10 difficulty levels
  • Practice Test — 10 difficulty levels
  • Answer key — for parents and tutors

For your personal study only. Copying, printing, screenshotting, or sharing this material is not permitted and may result in loss of access.

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