Math Puzzle Maker

About this worksheet maker

This free math puzzle maker turns arithmetic into a thinking game. Instead of a straight sum, a number or an operation is left blank, and the child has to reason backwards to work out what belongs in the gap.

Filling in a missing number or sign builds a deeper sense of how addition and subtraction connect, which helps children move beyond memorised facts toward genuine number sense.

You can mix the operations and set the difficulty to match your group, and each puzzle prints with an answer key so checking is straightforward. The variety keeps children thinking rather than guessing. It opens in any browser, in 11 languages, with no sign-in and nothing to download.

How to use it in class

• Choose which operations to include and how challenging to make them.
• Print the puzzle sheet for your class.
• Ask children to find the missing number or operation in each line.
• Confirm each answer with the printed key.

Worksheet ideas

• Use a puzzle as a short brain-warmer to open math time.
• Offer it as an extension for children ready to reason, not just recall.
• Solve one tricky line together and talk through the thinking.
• Set a small set as an early-finisher challenge.