Add and subtract rational expressions like a pro after you use this site. Finding common denominators is made easy with this tutorial. Try the example problems to test your knowledge, then check the solutions. The 'Topic Index' page...

[Free Registration/Login may be required to access all resource tools.] Practice adding and subtracting fractions in these problems that include inequalities.

[Free Registration/Login may be required to access all resource tools.] Practice adding and subtracting fractions with different denominators.

Practice solving word problems by adding and subtracting fractions. The fractions used in these problems have like (common) denominators. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a...

Practice solving fraction addition and subtraction word problems. The fractions in these problems have unlike denominators. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or...

Common Core standards encourage the use of models to build understanding in math. This lesson shows sometimes reluctant 2nd graders that models are helpful tools in solving mathematical problems.

[Free Registration/Login may be required to access all resource tools.] Here you'll learn how to add and subtract polynomials, as well as learn about the different parts of a polynomial. Practice problems are also included.

Students add and subtract plays on a football field to practice working with negative and positive integers on the number line.

In this interactive, students add and subtract plays on a football field to practice working with negative and positive integers on the number line. Each set of randomized drives consists of seven to nine plays and ends with a touchdown....

The students are working on the concept of adding and subtracting time along with developing their own strategies to figure out elapsed time.

This task challenges a student to demonstrate understanding of concepts involved in addition and subtraction. A student must be fluent with addition and subtraction within 100 and understand the relationship between addition and...

This task challenges a student to demonstrate fluency in adding and subtracting whole numbers.

Sixth graders are presented with a completed multiplication equation and are asked to use it to find the answers to seven other equations. To do this, they must use their reasoning and estimation skills. Aligns with 6.NS.B.3.

Students learn about matrix addition and subtraction, and scalar multiplication. The tutorial consists of class notes, examples, and practice problems. Review exercises and a chapter quiz are included.

Introduce polynomial operations to your middle school students using the highly engaging story of ?IntelliGum?. This one-of-a-kind gum, when chewed regularly, and in appropriate quantities, will make you smarter. As part of this creative...

In this lesson plan students use strategies based on place value to add and subtract within 100.

In this lesson, 7th graders add and subtract rational numbers to solve word problems.

In this lesson, 7th graders add and subtract rational numbers on a number line.

This lesson plan has students exploring was to add and subtract numbers with multi-digits and place value.

Lesson 1 of 4 for Passport to Advanced Math. Students will add, subtract, and multiply polynomials. They will build quadratic functions and write equations to represent a context.

This task challenges a student to demonstrate understanding of concepts involved in addition and subtraction.

In this feature, adapted from Interactive NOVA: Earth, students explore the relationship between oxygen concentration and the well-being of various organisms by simulating a change in oxygen levels and observing what happens.

This lesson plan provides students with an opportunity to demonstrate their understanding of real-world integers and create a PowerPoint presentation. It contains an assessment rubric as well as ideas for grouping students and managing...

Demonstrates how to add polynomials using both the horizontal and vertical formats.