- Puzzle 81: Move one matchstick from the 6 to make it a 0, and place it on the 5 to make it a 9. The equation becomes 8 + 0 = 8.
- Puzzle 82: Move one matchstick from the 8 to make it a 9, and place it on the 2 to make it a 3. The equation becomes 9 + 5 = 14. (Note: This requires moving two matchsticks, so an alternative is to move one matchstick from the plus sign to make it a minus, and place it on the 2 to make it a 8. The equation becomes 8 - 5 = 3.)
- Puzzle 83: Move one matchstick from the 10 to make it a 0, and place it on the 4 to make it a 9. The equation becomes 0 + 5 = 5.
- Puzzle 84: Move one matchstick from the 25 to make it a 23, and place it on the 23 to make it a 29. The equation becomes 23 + 6 = 29.
- Puzzle 85: Move one matchstick from the 35 to make it a 29, and place it on the 25 to make it a 31. The equation becomes 29 + 6 = 35. (Note: This requires moving two matchsticks, so an alternative is to move one matchstick from the 35 to make it a 25, and place it on the 25 to make it a 31. The equation becomes 25 + 6 = 31.)
- Puzzle 86: Move one matchstick from the 10 to make it a 0, and place it on the 2 to make it a 8. The equation becomes 0 + 0 = 0.
- Puzzle 87: Move one matchstick from the 15 to make it a 7, and place it on the 14 to make it a 15. The equation becomes 15 - 7 = 8.
- Puzzle 88: Move one matchstick from the 30 to make it a 29, and place it on the 31 to make it a 24. The equation becomes 29 - 7 = 22. (Note: This requires moving two matchsticks, so an alternative is to move one matchstick from the 30 to make it a 20, and place it on the 31 to make it a 21. The equation becomes 20 - 7 = 13.)
- Puzzle 89: Move one matchstick from the 66 to make it a 55, and place it on the 57 to make it a 62. The equation becomes 55 + 5 = 60.
- Puzzle 90: Move one matchstick from the 23 to make it a 22, and place it on the 0 to make it a 8. The equation becomes 22 + 15 = 37.
Parent Tip: Review the logic above to help your child master the concept of brain teaser worksheet for kids.
