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: ____________
14 friends meet. Each friend shakes hands with every other friend once. How many handshakes are there?
Answer: ______________ handshakes
23 friends meet. Each friend shakes hands with every other friend once. How many handshakes are there?
Answer: ______________ handshakes
3I think of a number. I multiply it by 2, then add 9. Now I have 23. What number did I start with?
Answer: ______________
4I think of a number. I multiply it by 5, then add 2. Now I have 37. What number did I start with?
Answer: ______________
5The scale balances. How much does one 🍎 weigh?
Answer: ______________
6The scale balances. How much does one 🍊 weigh?
Answer: ______________
75 friends meet. Each friend shakes hands with every other friend once. How many handshakes are there?
Answer: ______________ handshakes
8The scale balances. How much does one 🍊 weigh?
Answer: ______________
9The scale balances. How much does one 🍓 weigh?
Answer: ______________
10Every row, column, and diagonal makes 15. What number goes in the middle right box?
Answer: ______________
11I think of a number. I multiply it by 2, then add 4. Now I have 20. What number did I start with?
Answer: ______________
12The scale balances. How much does one 🍎 weigh?
Answer: ______________
Answer key: Challenge puzzles
- 1. 6 handshakes
- 2. 3 handshakes
- 3. 7
- 4. 7
- 5. 5
- 6. 3
- 7. 10 handshakes
- 8. 6
- 9. 7
- 10. 9
- 11. 8
- 12. 4
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/3rd-grade/challenge-3