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 2, then take away 5. Now I have 4. What number did I start with?
Answer: ______________
2I am more than 7 and less than 11, and I am odd. What number am I?
Answer: ______________
3I think of a number. I add 6, then take away 8. Now I have 9. What number did I start with?
Answer: ______________
4I am more than 37 and less than 41, and I am odd. What number am I?
Answer: ______________
5I think of a number. I add 3, then take away 1. Now I have 8. What number did I start with?
Answer: ______________
6I think of a number. I add 5, then take away 8. Now I have 6. What number did I start with?
Answer: ______________
7I think of a number. I add 6, then take away 3. Now I have 10. What number did I start with?
Answer: ______________
8I am more than 15 and less than 19, and I am odd. What number am I?
Answer: ______________
9I think of a number. I add 4, then take away 3. Now I have 3. What number did I start with?
Answer: ______________
10I think of a number. I add 3, then take away 10. Now I have 4. What number did I start with?
Answer: ______________
11I think of a number. I add 4, then take away 6. Now I have 7. What number did I start with?
Answer: ______________
12I think of a number. I add 5, then take away 3. Now I have 10. What number did I start with?
Answer: ______________
Answer key: Challenge puzzles
- 1. 7
- 2. 9
- 3. 11
- 4. 39
- 5. 6
- 6. 9
- 7. 7
- 8. 17
- 9. 2
- 10. 11
- 11. 9
- 12. 8
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/challenge-1