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 2, then add 4. Now I have 12. What number did I start with?
Answer: ______________
2I think of a number. I multiply it by 4, then add 9. Now I have 29. What number did I start with?
Answer: ______________
3I think of a number. I multiply it by 5, then add 8. Now I have 33. What number did I start with?
Answer: ______________
4I think of a number. I multiply it by 2, then add 3. Now I have 7. What number did I start with?
Answer: ______________
5I think of a number. I multiply it by 2, then add 2. Now I have 20. What number did I start with?
Answer: ______________
6I think of a number. I multiply it by 2, then add 8. Now I have 20. What number did I start with?
Answer: ______________
7I think of a number. I multiply it by 2, then add 2. Now I have 10. What number did I start with?
Answer: ______________
8The scale balances. How much does one 🍌 weigh?
Answer: ______________
9I think of a number. I multiply it by 3, then add 4. Now I have 10. What number did I start with?
Answer: ______________
10Every row, column, and diagonal makes 15. What number goes in the top left box?
Answer: ______________
11I think of a number. I multiply it by 4, then add 3. Now I have 23. What number did I start with?
Answer: ______________
12The scale balances. How much does one 🍊 weigh?
Answer: ______________
Answer key: Challenge puzzles
- 1. 4
- 2. 5
- 3. 5
- 4. 2
- 5. 9
- 6. 6
- 7. 4
- 8. 7
- 9. 2
- 10. 2
- 11. 5
- 12. 3
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/3rd-grade/challenge-3