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1st Grade Unit 8 – Addition and Subtraction

Unit Overview

Content Focus –

Students work adding numbers within 20, and work to achieve fluency for addition and subtraction within 10.  Students also apply their understanding to add and subtract 2-digit numbers.

Looking Back…

The previous three number units focused on counting, composing and decomposing numbers, and adding and subtracting small amounts.  Students have been developing and refining strategies to add and subtract within 10 through discussion and modeling.

Looking Forward…

It is important that students work to develop fluency for addition and subtraction combinations within 10.  In 2nd grade students will use that understanding to fluently know all of the combinations within 20, as well as apply that understanding to work on increasingly large addition and subtraction problems.




computer pic 2

Break Apart


Greg Tang Materials

Counting Activities

Ten Frame

Give the Dog a Bone

Missing Numbers Grids

Interactive 100s Chart

Lucky 6

Plus One Game

Race to 50

Make 10 Game

Math Fact Sort

Subtract From 10

Subtraction Games

9 Plus

Addition Split

Additional Resources

dice pic

Fluency With Basic Addition (article)

Adding and Subtracting Within 20 (2nd grade Video Series with Professional Learning)

Counting Collections to 100 (Video)