3rd Grade Core Skills Worksheets
50 printable 3rd Grade math worksheets on Core Skills. 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: all four operations in a quick review, then larger sums and differences worked out in boxes.
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 →
Choose a worksheet below, then open the large preview to zoom.
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
Core Skills Practice, numbered 1 to 50. The free ones open as PDFs.
Teaching Core Skills
What it is
A quick review of all four operations, short questions such as half of 70 and 100 more than 487, four problems to work out in boxes, and a story problem with an explanation.
When a child is ready
Use it once three-digit addition and subtraction and the times tables are in place.
If they struggle
The boxes are for showing the work. If an answer is wrong, the working shows whether it was a fact, a carry or a borrow that slipped.
Worksheet preview
The whole page is fitted when opened. Use +/−, click the page, or pinch to inspect details.
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