Manipulate "pigmented" color discs to see how mixing subtractive colors affect the overall color.

Gain an understanding of how to add or subtract polynomials by viewing an example and a video lesson.

Use this calculator for adding and subtracting integers. Positive and negative whole numbers are integers. The calculator shows the work for the math and shows you when to change the sign for subtracting negative numbers.

Features steps on how to add and subtract fractions with the same denominator.

A wealth of resources to help you in planning classroom instruction on rational expressions: lesson plans offer guidelines for and examples of simplifying, adding and subtracting, multiplying and dividing rational expressions; practice...

When you're working on a problem with lots of numbers, as in economics, cryptography or 3D graphics, it helps to organize those numbers into a grid, or matrix. Bill Shillito shows us how to work with matrices, with tips for adding,...

Includes all different types of synthesis, including FM, additive, AM, subtractive, granular, RM, and wavetable.

This helpful tutorial on color perception is divided into sections including our eyes and vision, additive and subtractive color mixing, hue and saturation, and color properties.

Teachers can assess students' knowledge of adding, subtracting, multiplying, and dividing decimals to hundredths with these printable worksheets. You can even create your own worksheet or flashcards.

Estimate sums and differences for positive proper fractions, n/d (numerator/denominator). Use rounding to estimate answers when adding or subtracting proper fractions.

This math tutorial features notes and examples that illustrate complex numbers including standard form, adding, subtracting, multiplying and dividing them.

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

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

Practice exercise reviews how to reduce a rational expression to lowest terms and how to add, subtract, multiply and divide rational expressions.

Practice exercise reviews complex numbers including standard form, adding, subtracting, multiplying and dividing them.

Worksheets provide practice with solving adding and subtracting fractions with answer keys are provided. You can even create your own worksheet or flash cards.

The goal of this lesson is for students to use manipulatives to add integers, creating concepts rather than memorizing rules. This lesson will be related to the 300 Spartans who battled the invading Persians at the Battle of Thermopylae,...

This section draws on previous sections that explored how to add, subtract, multiply, and divide rational numbers in order to solve real-world problems involving rational equations. It explores how to apply these procedures in order to...

Teachers, this is the place to come for fraction lesson plans if you teach elementary young scholars. All the topics have a number of resources available from which to choose.

This tutorial focuses on basic subtraction, subtraction facts, subtraction skills, subtraction of fractions and subtraction of positive and negative integers. Features include practice exercises and games.

Students are given a word problem with multiple solutions. They are challenged to solve the problem using manipulatives, to draw a picture to represent their work, and possibly record their responses using equations. Examples of...

In this task, 6th graders are asked to compare the buying power of $20 in 1987 and 2012 with respect to the cost of movie tickets. Aligns with 6.NS.B.3.

With this calculator, add, subtract, multiply and divide Roman numerals from I to MMMCMXCIX and/or numbers from 1 to 3999. Get answers in Roman numerals and regular numbers. It also shows the answer with steps when you add or subtract...

Test your math skills and speed with this fun space battle game. You will have to do more than just shoot straight, you will have to add, subtract, divide, and multiply quickly to win this battle.