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 5, then add 3. Now I have 28. What number did I start with?
Answer: ______________
2I think of a number. I multiply it by 5, then add 9. Now I have 39. What number did I start with?
Answer: ______________
3I think of a number. I multiply it by 3, then add 4. Now I have 19. What number did I start with?
Answer: ______________
4I think of a number. I multiply it by 5, then add 2. Now I have 12. What number did I start with?
Answer: ______________
5Every row, column, and diagonal makes 15. What number goes in the middle left box?
Answer: ______________
6I think of a number. I multiply it by 2, then add 2. Now I have 12. What number did I start with?
Answer: ______________
7The scale balances. How much does one 🍓 weigh?
Answer: ______________
8I think of a number. I multiply it by 2, then add 9. Now I have 13. What number did I start with?
Answer: ______________
9The scale balances. How much does one 🍐 weigh?
Answer: ______________
10I think of a number. I multiply it by 3, then add 7. Now I have 25. What number did I start with?
Answer: ______________
11The scale balances. How much does one 🍓 weigh?
Answer: ______________
12Every row, column, and diagonal makes 15. What number goes in the top middle box?
Answer: ______________
Answer key: Challenge puzzles
- 1. 5
- 2. 6
- 3. 5
- 4. 2
- 5. 9
- 6. 5
- 7. 8
- 8. 2
- 9. 6
- 10. 6
- 11. 5
- 12. 9
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/3rd-grade/challenge-3