πagarwalmath · 1st 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 add 5, then take away 4. Now I have 10. What number did I start with?
Answer: ______________
2I think of a number. I add 4, then take away 2. Now I have 13. What number did I start with?
Answer: ______________
3I think of a number. I add 6, then take away 10. Now I have 1. What number did I start with?
Answer: ______________
4What comes next? 4, 6, 8, 10, ?
Answer: ______________
5I think of a number. I add 4, then take away 5. Now I have 4. What number did I start with?
Answer: ______________
6I think of a number. I add 5, then take away 6. Now I have 6. What number did I start with?
Answer: ______________
7I think of a number. I add 3, then take away 2. Now I have 5. What number did I start with?
Answer: ______________
8I think of a number. I add 5, then take away 9. Now I have 7. What number did I start with?
Answer: ______________
9I think of a number. I add 6, then take away 5. Now I have 10. What number did I start with?
Answer: ______________
10I think of a number. I add 2, then take away 1. Now I have 6. What number did I start with?
Answer: ______________
11I think of a number. I add 3, then take away 4. Now I have 4. What number did I start with?
Answer: ______________
12I am more than 45 and less than 49, and I am odd. What number am I?
Answer: ______________
Answer key: Challenge puzzles
- 1. 9
- 2. 11
- 3. 5
- 4. 12
- 5. 5
- 6. 7
- 7. 4
- 8. 11
- 9. 9
- 10. 5
- 11. 5
- 12. 47
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/challenge-1