First grade secret code math worksheets

First grade secret code math uses addition within 10 or 20 to reveal a joke punchline.

Ready to print

Joke: addition within 10

Worksheet (PDF) Answer key

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Message: addition within 20

Worksheet (PDF) Answer key

Another version (PDF) · its answer key · Change the settings

Make your own secret code math worksheet

Each sheet has a Name line. Print on US Letter or A4 at 100%. The answer key is a separate PDF.

Secret Code Math for other grades

Second grade · Third grade

More first grade worksheets

Greater Than, Less Than · Telling Time · Counting Coins · Math Word Problems · Sentence Editing · Punctuation · Capital Letters · Word Search · Sight Words · Spelling · Phonics · Color by Number Math · Math Maze · Hundred Chart