# Make Ten Strategy (Addition)

Videos, examples, and solutions to help Kindergarten and Grade 1 kids learn to add and subtract within 20, demonstrating fluency for addition and subtraction within 10 by using strategies such as making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14).

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Common Core: 1.OA.6

### Learning Targets:

• I can add and subtract within 10 easily.
• I can add and subtract by making 10. (e.g. 7 + 3 = 10, 10 - 6 = 4)

The following diagrams show how to add using the Make-Ten strategy. Make Ten Strategy For Addition

Step 1: The first addend and what make ten?
Step 2: Write the number below the second addend
Step 3: The number below the second addend and what make the second addend?
Step 4: Add the rest to 10

Example:
6 + 7 = 6 + 4 + 3 = 10 + 3 = 13
5 + 8 = 5 + 5 + 3 = 10 + 3 = 13

Mental Math Strategies: Make 10

This video explains how to use mental strategies to add within 20 using the “make 10” strategy. This is one of the strategies suggested in the Common Core State Standards for Mathematics, 1.OA.6 and 2.OA.2.

With practice, this strategy can help students gain fluency when adding within 20. Eventually students will memorize these facts, which is expected by the end of grade 2.
7 + 5 = 7 + 3 + 2 = 10 + 2 = 12
4 + 9 = 4 + 6 + 3 = 10 + 3 = 13
8 + 7 = 8 + 2 + 5 = 10 + 5 = 15

Make 10 Strategy For Addition 7 + 9 = 7 + 3 + 6 = 10 + 6 = 16
8 + 6 = 8 + 2 + 4 = 10 + 4 = 14
75 + 7 = 75 + 5 + 2 = 80 + 2 = 82
54 + 8 = 54 + 6 + 2 = 60 + 2 = 62

Grade 1 Make-a-Ten Strategy For Unknown Total

Example:
9 + 5 = 9 + 1 + 4 = 10 + 4 = 14

Grade 1 Make-a-Ten Strategy For Unknown Partner

Example:
9 + _ = 14
9 + 1 + 4 = 14

Make 10 Addition Strategy

Example:
9 + 4 = 9 + 1 + 3 = 10 + 3 = 13
9 + 6 = 9 + 1 + 5 = 10 + 5 = 15
9 + 5 = 9 + 1 + 4 = 10 + 4 = 14
9 + 3 = 9 + 1 + 2 = 10 + 2 = 12
9 + 8 = 9 + 1 + 7 = 10 + 7 = 17
8 + 5 = 8 + 2 + 3 = 10 + 3 = 13
8 + 4 = 8 + 2 + 2 = 10 + 2 = 12

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