πagarwalmath · 3rd grade · Common Core MP.1
🚀 Challenge puzzles
Make sense of problems and keep at them (puzzles that need thinking, not a known method)
Name: ______________________Date: ____________
1I think of a number. I multiply it by 3, then add 9. Now I have 33. What number did I start with?
Answer: ______________
2I think of a number. I multiply it by 2, then add 2. Now I have 14. What number did I start with?
Answer: ______________
3I think of a number. I multiply it by 3, then add 8. Now I have 26. What number did I start with?
Answer: ______________
4Every row, column, and diagonal makes 15. What number goes in the bottom right box?
Answer: ______________
5Every row, column, and diagonal makes 15. What number goes in the bottom left box?
Answer: ______________
6The scale balances. How much does one 🍓 weigh?
Answer: ______________
7I think of a number. I multiply it by 5, then add 9. Now I have 19. What number did I start with?
Answer: ______________
8I think of a number. I multiply it by 4, then add 5. Now I have 25. What number did I start with?
Answer: ______________
9Every row, column, and diagonal makes 15. What number goes in the bottom right box?
Answer: ______________
10Every row, column, and diagonal makes 15. What number goes in the top middle box?
Answer: ______________
11I think of a number. I multiply it by 5, then add 3. Now I have 43. What number did I start with?
Answer: ______________
12I think of a number. I multiply it by 2, then add 6. Now I have 20. What number did I start with?
Answer: ______________
Answer key: Challenge puzzles
- 1. 8
- 2. 6
- 3. 6
- 4. 4
- 5. 2
- 6. 7
- 7. 2
- 8. 5
- 9. 4
- 10. 1
- 11. 8
- 12. 7
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/3rd-grade/challenge-3