This fourth grade addition and subtraction unit guide includes 10 lessons that teach common core (CCSS) 4th grade addition and subtraction standards using multiple strategies with up to 6 digit numbers. It includes 10 lesson plans, 5 practice worksheets, a study guide, a whole group subtraction activity, and a unit test (plus all answer keys).

Skills taught include:

• adding and subtracting with base ten blocks (builds conceptual understanding of regrouping)
• addition and subtraction using an open number line
• adding and subtracting with partial sums and partial differences
• the standard algorithm for addition
• the standard algorithm for subtraction
• subtracting across zeros
• key words in addition and subtraction word problems

Note: Feel free to use these ideas, worksheets, practice activities, and assessments on their own. However, this unit guide is part of a 4th grade addition and subtraction unit bundle. You will want to purchase the bundle in order to gain access to the Google Slides lessons, games, and task cards mentioned in the lesson plans.

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Credits: Base ten block clip art is by Sticky Foot Studio. All graphics and photos were created by Shea LaFountaine of LaFountaine of Knowledge. Fonts used include Pangolin by Kevin Burke, Londrina Solid and Londrina Shadow by Marcelo Magalhães. All fonts were used with permission under open source licenses.