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: ____________
15 friends meet. Each friend shakes hands with every other friend once. How many handshakes are there?
Answer: ______________ handshakes
2Every row, column, and diagonal makes 15. What number goes in the top left box?
Answer: ______________
34 friends meet. Each friend shakes hands with every other friend once. How many handshakes are there?
Answer: ______________ handshakes
43 friends meet. Each friend shakes hands with every other friend once. How many handshakes are there?
Answer: ______________ handshakes
56 friends meet. Each friend shakes hands with every other friend once. How many handshakes are there?
Answer: ______________ handshakes
6Every row, column, and diagonal makes 15. What number goes in the bottom left box?
Answer: ______________
7Every row, column, and diagonal makes 15. What number goes in the top right box?
Answer: ______________
8I think of a number. I multiply it by 3, then add 6. Now I have 15. What number did I start with?
Answer: ______________
9The scale balances. How much does one 🍎 weigh?
Answer: ______________
10The scale balances. How much does one 🍓 weigh?
Answer: ______________
11I think of a number. I multiply it by 5, then add 1. Now I have 11. What number did I start with?
Answer: ______________
12Every row, column, and diagonal makes 15. What number goes in the top right box?
Answer: ______________
Answer key: Challenge puzzles
- 1. 10 handshakes
- 2. 6
- 3. 6 handshakes
- 4. 3 handshakes
- 5. 15 handshakes
- 6. 4
- 7. 6
- 8. 3
- 9. 7
- 10. 9
- 11. 2
- 12. 2
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/3rd-grade/challenge-3