FREE Printable Crack the Code Kindergarten Addition Math ... Crack the code math worksheet This is a HUGE pack of addition to 10 worksheet! There are over 25 pages of math crack the code for kinder and grade 1 to solve. So done your sleuth hat, grab you magnifying glass, and get ready to solve the clues as you become a math detective! Students will look at the code - 2 animals from the same habitat.