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