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Primary Resources

Primary Resources: Basic Addition and Subtraction

For Teachers Pre-K - 1st
An extensive collection of teacher resources to help in teaching and reviewing the concepts of basic addition and subtraction. There are many worksheets, activities, PowerPoint presentations, smartboard activities, Word, Excel, and pdf...
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Knowledge Share

Super Kids: Addition and Subtraction Worksheet Creator

For Teachers 3rd - 8th
Create your own addition/subtraction math facts worksheets. Use them in the classroom for practice or timed drills, or at home! Choose from two levels of difficulty, and vertical or horizontal equation format. You input minimum and...
Unit Plan
OpenStax

Open Stax: Vector Addition and Subtraction: Graphical Methods

For Students 9th - 10th
In this interactive site, students will begin to understand the rules of vector addition, subtraction, and multiplication and apply graphical methods of vector addition and subtraction to determine the displacement of moving objects.
Unit Plan
OpenStax

Open Stax: Vector Addition and Subtraction: Analytical Methods

For Students 9th - 10th
In this interactive students will begin to understand the rules of vector addition and subtraction using analytical methods. They will apply analytical methods to determine vertical and horizontal component vectors.
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Khan Academy

Khan Academy: Addition and Subtraction Word Problems 1

For Students 2nd - 4th Standards
In this exercise, students practice addition and subtraction word problems 1. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Lesson Plan
Other

Nearpod: Addition & Subtraction Within 20

For Teachers 1st Standards
In this lesson on addition and subtraction within 20, 1st graders learn how to solve addition and subtraction story problems by finding clue words. Adding three addends is also taught in this lesson.
Unit Plan
Khan Academy

Khan Academy: Interpret Negative Number Addition and Subtraction Expressions

For Students 6th - 8th Standards
Practice working through addition and subtraction problems using the number line. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Inequalities With Addition and Subtraction

For Students 8th - 9th
[Free Registration/Login may be required to access all resource tools.] Learn how to solve one-step inequalities using addition and subtraction.
Unit Plan
CK-12 Foundation

Ck 12: Addition and Subtraction of Liters Applications (Grade 3)

For Students 3rd - 5th
[Free Registration/Login may be required to access all resource tools.] This learning module features three videos and a set of practice questions in which students solve word problems requiring either one-step or two-step addition...
Unit Plan
Scholastic

Scholastic: Study Jams! Math: Addition and Subtraction: Without Regrouping

For Students K - 1st Standards
Solve word problems with addition and subtraction without regrouping. Then test your knowledge.
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Khan Academy

Khan Academy: Integer Addition and Subtraction With Substitution

For Students 6th - 8th Standards
In this exercise, students practice integer addition and subtraction with substitution. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Unit Plan
CK-12 Foundation

Ck 12: Addition and Subtraction Phrases as Equations

For Students 7th
[Free Registration/Login may be required to access all resource tools.] Write addition and subtraction verbal phrases as single variable equations.
Unit Plan
Khan Academy

Khan Academy: Relate Addition and Subtraction

For Students K - 1st Standards
Practice seeing how addition and subtraction are related. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Comparing With Two Step Addition and Subtraction Word Problems

For Students 2nd - 4th Standards
[Free Registration/Login may be required to access all resource tools.] The video is a 2 part word problem using addition and subtraction of 2-digit numbers. The video is followed by practice problems to assess student understanding of...
Interactive
Scholastic

Scholastic: Study Jams! Math: Addition & Subtraction: Properties of Addition

For Students 4th - 5th
Sing a song, practice step by step and assess your knowledge on the properties of addition with this interactive lesson.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Linear Systems With Addition or Subtraction

For Students 8th - 9th
[Free Registration/Login may be required to access all resource tools.] Solve systems of equations by addition or subtraction.
Unit Plan
Scholastic

Scholastic: Study Jams! Math: Addition and Subtraction: Additon With Regrouping

For Students K - 1st Standards
Solve problems step by step by addition with regrouping.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: More and Less Addition and Subtraction

For Students 2nd - 4th
[Free Registration/Login may be required to access all resource tools.] The video describes how to break down a subtraction statement to determine if the statement should be more or less than. The video is followed by a series of...
Activity
Math Is Fun

Math Is Fun: Word Questions: Elementary Subtraction

For Students Pre-K - 1st Standards
Simple word problems challenge your subtraction skills. If you get stuck, use the clues and the number line for help.
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Khan Academy

Khan Academy: Regrouping: Two Digit Number Minus One Digit Number

For Students Pre-K - 1st Standards
In this exercise, students practice regrouping with two-digit number minus one-digit number. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Unit Plan
Khan Academy

Khan Academy: Understand Subtraction as Adding the Opposite

For Students 6th - 8th Standards
Practice rewriting subtraction problems as equivalent addition problems. For example, 2-9=2+(-9). Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Khan Academy

Khan Academy: Addition Word Problems Within 10

For Students 6th - 8th Standards
In this exercise, students practice addition word problems within 10. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
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Khan Academy

Khan Academy: Breaking Apart Two Digit Addition Problems

For Students Pre-K - 1st Standards
In this exercise, students practice breaking apart two-digit addition problems. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Activity
CK-12 Foundation

Ck 12: Mixed Operations: Addition and Subtraction Ii Word Problems

For Students 1st - 8th
[Free Registration/Login may be required to access all resource tools.] Students are given word problems with various operations used to solve. Watch a video for additional help and answer a practice problem. [1:32]

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