# Thinking Addition: A Mental Math Subtraction Strategy Unit

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1. This file includes all of the mental math strategy units in the Complete Addition Collection and the Complete Subtraction Collection. The units in the addition collection include: - Counting On - Doubles - Doubles Plus One - Making Ten - Making Multiples of Ten - Front End Addition The units in t
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2. Interested in purchasing the Addition AND Subtraction Collections? You can save money by purchasing them together. Click on the link below for more details: Mental Math Strategy Units: Addition and Subtraction Combo Pack This zipped file contains all six units in the SUBTRACTION portion of the Ment
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This unit is part of the subtraction portion of the Mental Math Strategy Collection.

To purchase all six subtraction units together and save \$6.95, please view the link below:
Mental Math Units: the Complete Subtraction Collection

Thinking Addition is one of the most effective strategies for solving subtraction equations. Because many students find subtraction difficult to master, using addition to solve a subtraction equation can make the process easier.

In this strategy unit, students will learn that there is an inverse relationship between the operations of addition and subtraction. Students will use known addition facts to solve subtraction equations and gain experience with forming fact families. They will learn that knowing one fact can help them with other related facts.

This mental math strategy unit includes all of the materials that you will need to teach your students about the strategy of "thinking addition." Included is independent seat work, flashcards, center activities, large group kinesthetic learning activities and more!

Furthermore, the activities in this unit have been divided into three levels. The first level uses numbers up to 10, the second level uses numbers to 20, and the third level uses numbers up to 100. This will enable you to use the activities that best target the individual students in your classroom.

Enjoy!
~Shelley Gray

To view the entire Mental Math Strategy Collection, please click on the link below:
Mental Math Strategy Units by Shelley Gray

Additionally, feel free to view my YouTube video on Mental Math Subtraction Strategies by clicking on the link below:
Mental Math Subtraction Strategies on YouTube
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133 pages
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