# Using Ten: 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

Using Ten is a mental math strategy for subtraction that involves changing a number to "10" and then adding on the remainder to solve a subtraction equation. For example, in the equation 13-8, a student would first perform the equation 10-8=2, and then add 3 more to make a total difference of 5.

Using Ten is an important strategy to learn, as it will enable students to use mental math to calculate differences using a sequence of steps. Additionally, learning this strategy will equip students with the skills needed to use similar strategies for other equations. For example, once a student has mastered how to "use ten," he might begin to "use twenty" for an equation such as 24-19=___. As students master this strategy, you will likely notice them using it in many different circumstances.

This mental math strategy unit includes materials and printables that will help your students learn and practice the strategy of using ten. Included is independent seat work, flashcards, center activities, large group kinesthetic learning activities and more!

Additionally, at the end of this unit you will find a special BONUS section that will provide practice with using multiples of ten. This can be used as a follow up to the main activities in this unit, or as enrichment for students that are easily grasping the main concepts in this unit.

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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