Extra practice adding and subtracting 10 from any double digit number. These fun, routine worksheets with encourage students to learn to add and subtract 10 from memory using what they know about a 100's chart. They will also have practice adding and subtracting 1. The fun graphics encourage students to solve the mystery of the missing numbers.
Enjoy 10 practice sheets with nearly all applicable numbers on the 100's chart for extra practice, generalization and application!