This is a printable and editable resource for students to practice rearranging the numbers in an addition problem (with a sum of 10-20). This resource guides students to take some from one number and give it to the other to create a group of ten, which is easier to add. Print your selected page(s) on white or colorful paper and laminate or put in a sheet protector! This activity can be used with flashcards, a list of addition problems, or an aid to solve addition problems online. This resourc