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Khan Academy

Khan Academy: Subtraction Within 100

For Students 1st - 3rd Standards
In this exercise, students practice subtraction within 100. Students receive immediate feedback and have the opportunity to watch a video tutorial, get hints, and try questions repeatedly. CCSS.Math.Content.3.NBT.A.2 Fluently add and...
Unknown Type
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.
Unknown Type
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.
Unit Plan
Khan Academy

Khan Academy: Addition Within 1000

For Students K - 1st Standards
In this exercise, students practice addition within 1000. Students receive immediate feedback and have the opportunity to get hints, watch a video tutorial, and try questions repeatedly. CCSS.Math.Content.3.NBT.A.2 Fluently add and...
Unit Plan
Khan Academy

Khan Academy: Subtraction Within 1000

For Students 3rd - 5th Standards
In this exercise, students practice subtraction within 1000. Students receive immediate feedback and have the opportunity to get hints, watch video tutorials, and try questions repeatedly. CCSS.Math.Content.3.NBT.A.2 Fluently add and...
Unit Plan
Khan Academy

Khan Academy: Addition Using Groups of 10 and 100

For Students 3rd - 5th Standards
In this exercise, students practice addition using groups of 10 and 100. Students receive immediate feedback and have the opportunity to get hints, watch a video tutorial, and try questions repeatedly. CCSS.Math.Content.3.NBT.A.2...
Interactive
CK-12 Foundation

Ck 12: Adding by Counting On

For Students Pre-K - 1st Standards
[Free Registration/Login may be required to access all resource tools.] The video uses counting on to solve an addition problem with sums to ten. The video is followed by practice problems.
Unit Plan
Khan Academy

Khan Academy: Solve Problems With Picture Graphs 1

For Students K - 1st Standards
Read and interpret picture graphs. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a tutorial video, or receive hints.
Unit Plan
Khan Academy

Khan Academy: Add and Subtract on a Number Line

For Students 1st - 3rd Standards
Practice adding and subtracting numbers like 554 and 237 using a number line. All numbers are less than 1000. 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: Adding and Subtracting Terms Numbers to 100

For Students 3rd - 5th Standards
[Free Registration/Login may be required to access all resource tools.] This is a tool that gives a video demonstration and follows up with a pratice activity that checks for understanding.
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Khan Academy

Khan Academy: Add and Subtract Mixed Numbers (No Regrouping)

For Students 4th Standards
Practice adding and subtracting mixed numbers.
Unknown Type
CK-12 Foundation

Ck 12: Add and Subtract Fractions in Inequalities Practice

For Students 4th - 5th Standards
[Free Registration/Login may be required to access all resource tools.] Practice adding and subtracting fractions in these problems that include inequalities.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Adding and Subtracting to Determine the Longest

For Students 2nd - 4th Standards
[Free Registration/Login may be required to access all resource tools.] The video [0:34] describes how to add and subtract measurements of length from a given word problem. The video is followed by practice problems covering the topics...
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Addition of Polynomials

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Adding polynomials vertically and horizontally.
Unit Plan
Khan Academy

Khan Academy: Algebra: Arithmetic With Polynomials and Rational Expressions

For Students 9th - 10th Standards
Understand that polynomials form a system analogous to the integers, namely, they are closed under the operations of addition, subtraction, and multiplication i.e. one can add, subtract, and multiply polynomials.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Adding and Subtracting Fractions With Different Denominators

For Students 4th - 5th Standards
[Free Registration/Login may be required to access all resource tools.] This video gives steps of finding common denominators and then adding and subtracting multiple fractions together. After the video, there are practice problems...
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Khan Academy

Khan Academy: Add and Subtract Within 100 Word Problems 1

For Students 2nd Standards
Practice adding and subtracting to solve word problems. These questions are result unknown or change unknown problems. Numbers used are 100 or less.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: Cave Game Subtraction

For Teachers 1st - 2nd
The purpose of this task is for students to practice creating and memorizing subtraction equations while focusing on missing addends. After modeling the activity with the whole class, this game would be perfect for centers and small groups.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 2.nbt Many Ways to Do Addition 2

For Teachers 2nd Standards
This lesson plan has students exploring was to add and subtract numbers with multi-digits and place value.
Professional Doc
Primary Resources

Primary Resources: Word and Real Life Problems

For Teachers Pre-K - 1st Standards
Are you looking for some problem solving activities to do with your class? Look no farther. This site includes games, worksheets, presentations in PowerPoint, and smartboard files.
Activity
K-5 Math Teaching Resources

K 5 Math Teaching Resources: Add and Subtract Ten on a Number Line [Pdf]

For Students 1st - 2nd Standards
Students will roll a die and follow the directions to explore adding and subtracting on a number line.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: Boys and Girls, Variation 2

For Teachers 1st - 2nd Standards
Students are asked to solve a word problem with both addends unknown. They will write an equation and draw a picture to use to explain their answer.
Unit Plan
E-learning for Kids

E Learning for Kids: Math: Snorkeling Great Barrier Reef: Number: Count to 20 and Comparison

For Students K - 1st Standards
Go snorkeling with Bill in the Great Barrier Reef and help him with some numbers in the sea!
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Khan Academy

Khan Academy: Add and Subtract Polynomials: Two Variables

For Students 9th - 10th Standards
Practice adding and subtracting polynomials. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.

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