Back to Grade 3
Guess-and-check problems
Questions at easy, medium and hard levels. Pick a level and get a fresh set every time, with instant feedback.
Learn it Make a sensible guess, check it, then adjust your guess until it works.
Example: Two numbers add to 15 and their difference is 3. What are they?
- Guess 8 and 7: they add to 15 but the difference is 1. Too close.
- Try 9 and 6: they add to 15 and the difference is 3. ✓
- The numbers are 9 and 6.
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