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Plus Times Puzzles

I first ran across Erich Friedman’s Plus Times Puzzles back in 2019. I have featured several of Erich’s puzzles on my blog before including Arrows Puzzle, Ducks and Snakes Puzzle, Equation Rotation Puzzle, Connect the Dots, and Hidden Equation. I was super excited when I discovered that he has an entire page of puzzles online called Erich’s Puzzle Palace.

plus times puzzles

One of his puzzles that caught my eye was his Plus Times Puzzles. I bookmarked the page and jotted down a note on one of my million to do lists to create my own copy to use with my students.

plus times puzzles erich friedman

In the Plus Times Puzzles, you are given a set of numbers as well as a plus sign, a times sign, and an equal sign. You must combine the digits and symbols given to form a correct mathematical equation. You may draw in parentheses, as needed.

Each Plus Times Puzzle has a unique solution.

plus times puzzles erich friedman

Printable Version of Plus Times Puzzles

plus times puzzles erich friedman

Each puzzle is a separate deck of cards in a bag.

plus times puzzles erich friedman

Each bag of laminated cards has a puzzle card which features the numbers involved in the puzzle as well as the letter of the puzzle.


drawing of laminator machine with text "laminating recommendations"

A laminator is a MUST-HAVE for me as a math teacher! I spent my first six years as a teacher at a school with a broken laminator, so I had to find a way to laminate things myself.

I’ve had several laminators over the years. I currently use a Scotch laminator at home and a Swingline laminator at school.

I highly recommend splurging a bit on the actual laminator and buying the cheapest laminating pouches you can find!

The rest of the cards in the bag are designed to be moved around while solving the puzzle.

plus times puzzles erich friedman

I created tracking sheets for groups to keep track of which puzzles they have solved and which are still stumping them.

plus times puzzles erich friedman

I think when I do this with groups next year, I will hole punch the letters as groups solve the puzzles.

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 with information about what you teach and where you teach. I will be happy to forward an answer key to you.

Tricia Krumbach

Monday 18th of October 2021

My kids can't get enough of these math puzzles!

Colleen Donahue

Friday 1st of October 2021

Can't wait to use these!

Sheryl Rubin

Friday 24th of September 2021

I'd like an answer key as well, please!

Sarah Carter

Tuesday 28th of September 2021

I just sent you an email, Sheryl!


Friday 24th of September 2021

These are a great resource, thank you!!

LaShan Wilson

Wednesday 15th of September 2021

Good Morning. May I please get the key to this amazing puzzle?

Sarah Carter

Thursday 16th of September 2021

Sent you an email, LaShan!

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