# Counting Back and Counting Up: 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

This unit is priced higher than the others because it is a special Double Mental Math Strategy Unit that includes a wealth of activities for the closely related subtraction strategies of counting back and counting up. These are generally the first strategies that a student will learn when working with mental math subtraction strategies.

Counting back involves beginning with the minuend of the subtraction equation and counting back. For example, in the equation 8-3, a student will begin with "8" in his head and count back "7, 6, 5." In this case the difference is 5.

Counting up involves beginning with the subtrahend of the equation and counting up. For example, in the equation 9-6, a student will begin with the "6" and count up "7, 8, 9." Learning this strategy will help students see that there is a correlation between subtraction and addition, which will prepare them for learning other subtraction strategies, such as "Thinking Addition."

This extensive unit will focus on some of the most visual ways of counting back and counting up, including domino and dot patterns, empty number lines, and number charts.

Similar to the "Counting On" addition strategy unit, this resource is separated into three sections: 0-10, 11-20 and 21-100. This will allow you to choose the activities that best suit your grade level. Additionally, the different sections can be used to differentiate instruction and target specific learning needs within your classroom.

Included is independent seat work, flashcards, center activities, large group kinesthetic learning activities and more!

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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