# X Marks the Spot Puzzle

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I ran across this X Marks the Spot Puzzle several years ago. The goal of the puzzle is to place Xs in the drawing so that a certain set of requirements is met.

After typing up this puzzle with several other brainteasers, I promptly misplaced the computer file before ever using any of the puzzles with my students. Several months ago, I ran across the file and decided I needed to use the puzzles in my classroom and share them here on the blog.

I learned of this challenge from a collection of brainteasers that is no longer online. Luckily, an archived version of the website still exists.

In X Marks the Spot, you are tasked with placing Xs in a drawing to meet certain requirements. Place Xs in the drawing so that:

- exactly two Xs are within the triangle and circle only,
- exactly two Xs are within the square and circle only,
- exactly five Xs are in the triangle, and
- there are a total of ten Xs within the circle.

I plan on using this puzzle with my students in a dry erase pocket to make it easy for them to draw/erase Xs.

**MATH = LOVE RECOMMENDS…**

I cannot imagine teaching math without my dry erase pockets! They instantly make any activity more engaging and save me countless hours at the copy machine since I can use the same class sets of copies year after year.

Here are my current go-to recommendations:

If you don’t have a classroom set of dry erase pockets, you could also use heavy duty sheet protectors. But, I highly recommend investing in a classroom set of the pockets since they are so much more durable.

## Digital Version of X Marks the Spot Puzzle

Kathy Henderson has created a Desmos Activity Builder version of the X Marks the Spot Puzzle.

## Free Download of X Marks the Spot Puzzle

X Marks the Spot (PDF) (3814 downloads )

X Marks the Spot (Editable Publisher File ZIP) (1613 downloads )

## Puzzle Solutions

I intentionally do not make answers to the printable math puzzles I share on my blog available online because I strive to provide learning experiences for my students that are non-google-able. I would like other teachers to be able to use these puzzles in their classrooms as well without the solutions being easily found on the Internet.

However, I do recognize that us teachers are busy people and sometimes need to quickly reference an answer key to see if a student has solved a puzzle correctly or to see if they have interpreted the instructions properly.

If you are a teacher who is using these puzzles in your classroom, please send me an email at sarah@mathequalslove.net with information about what you teach and where you teach. I will be happy to forward an answer key to you.

## More Dry Erase Puzzles

- Product Square Puzzle
- Nines Challenge Puzzle
- Square Sums Puzzle
- Divisibility Puzzle
- Eights Challenge
- Lines of 3 Puzzle
- Equal Sums Puzzle
- Sevens Number Challenge
- Sixes Number Challenge
- Fives Challenge Puzzle
- 3-1-4 Pi Day Number Challenge
- Fours Challenge Puzzle
- Threes Challenge
- Twos Challenge
- 9 Pumpkins Puzzle
- Connect the Shapes Puzzles
- Hidden Equation Puzzle 3
- X Marks the Spot Puzzle
- Hidden Equation Puzzle 2
- Shape Grid Puzzle
- 145 Doors Puzzle
- Tic Tac Total Puzzle
- Connect the Dots Puzzle
- Hidden Equation Puzzle 1
- Arrows Puzzle
- Maximize the Sum Puzzle
- 9 Dots Puzzle
- How Far Can YOU Climb? – An Activity by Frank Tapson