3rd Grade Find the Unknown Worksheets
50 printable 3rd Grade math worksheets on Find the Unknown. Every sheet has a worked answer key — 50 in all. The first three worksheets are free to download; All Access opens the rest and every answer key.
In Grade 3: multiplication and division fact families, with the missing number in any place.
Practice pages support a program; they are not the lesson. These sheets reinforce Building Number Sense Grade 3, the sequenced K–5 math series from Faith Thinkers. See every program →
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3 of 50 worksheets free · All Access opens the other 47 and all 50 answer keys
The free sheets download from this page as PDFs. Open to everyone.
Included in All Access — $39/month for every child in the household, cancel anytime.
Members can add these sheets to a workbook of their own: My Workbooks.
All 50 worksheets in this set
Find The Unknown Practice, numbered 1 to 50. The free ones open as PDFs.
Teaching Find the Unknown
What it is
Multiplication and division fact families with the blank in any place: a missing factor, a missing product, or the number being divided. A story problem ends the page.
When a child is ready
Ready once the times tables to 9 are known.
If they struggle
Every equation on the page belongs to a family of three numbers. Say the multiplication fact that uses the two known numbers, and the third is the answer.
Worksheet preview
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