Code Addition Worksheet Maker

Decode the pictures, then add the numbers

Open the free Code Addition Worksheet Maker

See what you can make

Each style below is a ready-made sample — tap to play it, and every worksheet is free to print.

Secret Word

Solve the sums and the answers spell out a fun secret word.

Number Code

Solve each sum, then use the number key to crack a hidden picture code.

About this worksheet maker

This free code addition worksheet maker adds a little puzzle to ordinary sums. A small legend pairs each picture or symbol with a number, and the child reads the key first, swaps the pictures for their values, and then adds them up.

The extra decoding step builds careful reading and one-to-one matching alongside the math, which makes it a satisfying challenge for children who already add small numbers confidently.

Choose a theme for the legend pictures and a number range to control the difficulty. Each sheet prints with a matching answer key, so you can confirm both the decoding and the totals. It runs in any browser, in 11 languages, with no account needed.

How to use it in class

Pick a theme so the legend pictures suit your class.
Set a number range that matches your learners' adding skills.
Print the sheet and remind children to read the picture key first.
Check both the decoded numbers and the totals against the answer key.

Worksheet ideas

Introduce it as a 'secret code' activity to spark curiosity.
Use it as an extension for children who finish plain addition early.
Walk through one decoded sum together before children work alone.
Tie the legend theme to a current topic for a themed challenge.