## Make a Ten

Math centers this week are focusing on one strategy, making a ten.  Knowing how to make ten is a fundamental skill when working with numbers in a base ten system.  For example, knowing 2 + 8 = 10 relates to knowing 20 + 80 = 100 or 200 + 800 = 1000.  Likewise, knowing 2 + 8 = 10 prepares students to understand that 62 + 8 = 70.  In working on the make a ten strategy, we are also working with fact families.  Using combinations of 10 in this way helps students to solve related facts as well as algebraic expressions.  As we practice this strategy in the classroom, students will be playing a variety of online games, looking for patterns, building with unifix cubes, filling ten frames with counters, writing number sentences, and solving equations.  Just as when working with doubles facts, our goal is to memorize our 10 facts.  Each of these are listed below.

0 + 10 = 10

1 + 9 = 10

2 + 8 = 10

3 + 7 = 10

4 + 6 = 10

5 + 5 = 10

6 + 4 = 10

7 + 3 = 10

8 + 2 = 10

9 + 1 = 10

10 + 0 = 10

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