4th Grade Math · Number Hunt: Sums and Products
Find the sum or product Worksheets
Fresh practice, ready to print. Answer key included.
Five numbers up to 100, such as 4, 6, 24, 31 and 50.
Make it yours
Or start with a ready-made version.
How it works: a quick refresher
The rules this worksheet practices, then one problem worked from start to finish.
| Strategy | How it works |
|---|---|
| Try both | For each pair, check the sum and the product. 4 and 6 make 10 or 24. |
| Products grow fast | A big number is more likely a product; a middle-sized one could be either. |
| Only one works | Exactly one number can be made from two others, in one way. |
| Write the sign | Fill in + or × in the circle of the number sentence. |
Worked example
Find the number made from two others: 4, 6, 24, 31 and 50.
- 1Try 4 and 6: 4 + 6 = 10 is not here, but 4 × 6 = 24 is.
- 2Check the rest: 31 and 50 can't be made from two others here.
- 3Circle 24 and write 4 × 6 = 24.
Ready-made versions
Three fixed versions you can link to or share. Each is a PDF with its own answer key.
- Find the sum or product Worksheets, version 1Worksheet PDFAnswer key PDF
- Find the sum or product Worksheets, version 2Worksheet PDFAnswer key PDF
- Find the sum or product Worksheets, version 3Worksheet PDFAnswer key PDF
Grade level and standard
Written for 4th grade math (puzzles) and aligned to CCSS 4.OA.B.4. It also works as review in later grades.
Common questions
- Is there an answer key?
- Yes. Every worksheet has a matching answer key with each answer worked on the same grid or layout as the question. The worksheet code printed at the bottom of each page pairs a sheet with its key.
- Why mix addition and multiplication?
- Children have to think about which operation fits, not just run one. It is good review before multi-step problems.
- Is there a version to play on screen?
- Yes. Flip's Number Hunt has the same puzzles as a free game: endlessworksheets.com/games/number-hunt/sums-and-products.
- How many different versions are there?
- About a million per skill. Each time you press the button the problems are generated fresh, so you can print a different version for every student, a retake, or another night of practice.
- Are the worksheets free?
- Yes. They are free to print and copy for your home or classroom, with no sign-up.
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