Secret Message Math: Addition and Subtraction Code Worksheets for Ages 6–8

This black-and-white printable includes eight child activity pages plus a teacher guide, with numeral-to-letter keys on each page and options children can complete independently or in sequence. Children solve addition and subtraction facts, match each answer to a letter, and decode or create short secret messages. The activities also invite children to spot and repair errors, with an easier option and within-20 challenges for differentiation. Use it for math practice, an independent work station, or a partner activity for early elementary learners.