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MathematicsMultiplication & DivisionAges 8–9

Unknown in Multiplication & Division

Determine the unknown whole number in a multiplication or division equation relating three whole numbers (e.g. 8 × ? = 48, ? × 6 = 42)

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Use an inverse relationship to find an unknown quantity.

Use an inverse relationship to find an unknown quantity.

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Check understanding

  • Find the missing factor in 7 × ? = 63
  • Find the missing dividend in ? ÷ 5 = 9
  • Explain the strategy used (e.g. using the related multiplication fact)
“If your child sees '8 × ? = 48' or '? ÷ 6 = 7' written on paper, can they figure out what number goes in the blank?”

Curriculum record

Type
Procedural
Subject
Mathematics
Domain
Multiplication & Division
Age range
Ages 8–9

Standards

ccss-math:3.OA.4