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 6. Now I have 30. What number did I start with?
Answer: ______________
2I think of a number. I multiply it by 4, then add 5. Now I have 33. What number did I start with?
Answer: ______________
3I think of a number. I multiply it by 2, then add 2. Now I have 14. What number did I start with?
Answer: ______________
4I think of a number. I multiply it by 3, then add 6. Now I have 24. What number did I start with?
Answer: ______________
5I think of a number. I multiply it by 4, then add 5. Now I have 29. What number did I start with?
Answer: ______________
6I think of a number. I multiply it by 3, then add 9. Now I have 33. 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 5, then add 7. Now I have 22. What number did I start with?
Answer: ______________
9I think of a number. I multiply it by 2, then add 7. Now I have 23. What number did I start with?
Answer: ______________
10I think of a number. I multiply it by 4, then add 7. Now I have 27. What number did I start with?
Answer: ______________
11The scale balances. How much does one 🍊 weigh?
Answer: ______________
12I think of a number. I multiply it by 4, then add 9. Now I have 29. What number did I start with?
Answer: ______________
Answer key: Challenge puzzles
- 1. 8
- 2. 7
- 3. 6
- 4. 6
- 5. 6
- 6. 8
- 7. 8
- 8. 3
- 9. 8
- 10. 5
- 11. 8
- 12. 5
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/3rd-grade/challenge-3