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: ____________
16 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 5, then add 6. Now I have 36. What number did I start with?
Answer: ______________
4I think of a number. I multiply it by 4, then add 1. Now I have 29. 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: ______________
7I think of a number. I multiply it by 4, then add 1. Now I have 25. What number did I start with?
Answer: ______________
85 friends meet. Each friend shakes hands with every other friend once. How many handshakes are there?
Answer: ______________ handshakes
94 friends meet. Each friend shakes hands with every other friend once. How many handshakes are there?
Answer: ______________ handshakes
10I think of a number. I multiply it by 5, then add 1. Now I have 11. What number did I start with?
Answer: ______________
11I think of a number. I multiply it by 4, then add 1. Now I have 21. What number did I start with?
Answer: ______________
12The scale balances. How much does one 🍓 weigh?
Answer: ______________
Answer key: Challenge puzzles
- 1. 15 handshakes
- 2. 3 handshakes
- 3. 6
- 4. 7
- 5. 7
- 6. 5
- 7. 6
- 8. 10 handshakes
- 9. 6 handshakes
- 10. 2
- 11. 5
- 12. 4
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/3rd-grade/challenge-3