These secret code puzzles are designed to provide fun addition and subtraction practice! This free sample set includes the following secret code puzzles: ★ Addition and Subtraction within 10★ Addition within 50 - some regrouping★ Subtraction within 100 - all regrouping*****************************************************************************For the full set of puzzles, click here!In the complete set, you'll receive a total of 24 puzzles: Numbers to 10 (3 total)★ Addition to 10, Subtraction t