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 4, then take away 5. Now I have 3. What number did I start with?
Answer: ______________
2I think of a number. I add 5, then take away 6. Now I have 6. What number did I start with?
Answer: ______________
3I think of a number. I add 4, then take away 7. Now I have 1. What number did I start with?
Answer: ______________
4I think of a number. I add 4, then take away 9. Now I have 7. What number did I start with?
Answer: ______________
5I think of a number. I add 4, then take away 11. Now I have 1. What number did I start with?
Answer: ______________
6What comes next? 14, 24, 34, 44, ?
Answer: ______________
7I think of a number. I add 4, then take away 2. Now I have 5. What number did I start with?
Answer: ______________
8I am more than 19 and less than 23, and I am odd. What number am I?
Answer: ______________
9I think of a number. I add 2, then take away 8. Now I have 1. What number did I start with?
Answer: ______________
10I think of a number. I add 2, then take away 3. Now I have 4. What number did I start with?
Answer: ______________
11I think of a number. I add 2, then take away 4. Now I have 3. What number did I start with?
Answer: ______________
12I think of a number. I add 4, then take away 14. Now I have 2. What number did I start with?
Answer: ______________
Answer key: Challenge puzzles
- 1. 4
- 2. 7
- 3. 4
- 4. 12
- 5. 8
- 6. 54
- 7. 3
- 8. 21
- 9. 7
- 10. 5
- 11. 5
- 12. 12
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/1st-grade/challenge-1