Lots of ways to learn higher decade (20 to 100) addition and subtraction, with and without regrouping (various methods): using written computation; mental math (various methods); fact families; bridging; "checking" answers; ways to practice; and more. The "Easy to Learn" series of booklets present information in very simple language with lots of illustrations. Perfect for parents doing homework help, as classroom resources, for home school families, and for tutors.
This is a PDF file, which can be printed, then cut pages in half and staple to make booklet, or you can make mini-booklets by choosing the "booklet option" when you print (again, cut and staple).
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