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: ____________
13 friends meet. Each friend shakes hands with every other friend once. How many handshakes are there?
Answer: ______________ handshakes
24 friends meet. Each friend shakes hands with every other friend once. How many handshakes are there?
Answer: ______________ handshakes
3The scale balances. How much does one 🍐 weigh?
Answer: ______________
45 friends meet. Each friend shakes hands with every other friend once. How many handshakes are there?
Answer: ______________ handshakes
5I think of a number. I multiply it by 4, then add 3. Now I have 19. What number did I start with?
Answer: ______________
6I think of a number. I multiply it by 4, then add 5. Now I have 25. What number did I start with?
Answer: ______________
76 friends meet. Each friend shakes hands with every other friend once. How many handshakes are there?
Answer: ______________ handshakes
8I think of a number. I multiply it by 2, then add 4. Now I have 22. What number did I start with?
Answer: ______________
9The scale balances. How much does one 🍓 weigh?
Answer: ______________
10I think of a number. I multiply it by 2, then add 1. Now I have 19. What number did I start with?
Answer: ______________
11Every row, column, and diagonal makes 15. What number goes in the top left box?
Answer: ______________
12I think of a number. I multiply it by 2, then add 1. Now I have 5. What number did I start with?
Answer: ______________
Answer key: Challenge puzzles
- 1. 3 handshakes
- 2. 6 handshakes
- 3. 3
- 4. 10 handshakes
- 5. 4
- 6. 5
- 7. 15 handshakes
- 8. 9
- 9. 6
- 10. 9
- 11. 2
- 12. 2
Practice this lesson online with games that adjust to your child: agarwalmath.com/math/3rd-grade/challenge-3