CK-12 Foundation
Ck 12: Complex Numbers
[Free Registration/Login may be required to access all resource tools.] This lesson covers the powers of i, and adding and subtracting complex numbers, as well as how to plot them in the complex plane. Students examine guided notes,...
TED Talks
Ted: Ted Ed: How to Organize, Add and Multiply Matrices
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,...
Math Planet
Math Planet: Monomials and Adding or Subtracting Polynomials
Gain an understanding of how to add or subtract polynomials by viewing an example and a video lesson.
![Inside Mathematics: Leapfrog Fractions [Pdf] Lesson Plan](https://static.lp.lexp.cloud/images/attachment_defaults/resource/large/FPO-knovation.png "Inside Mathematics: Leapfrog Fractions [Pdf] Lesson Plan")
University of Texas
Inside Mathematics: Leapfrog Fractions [Pdf]
This task challenges a student to use their knowledge and understanding of ways to represent numbers and fractions in order to add fractions.
Calculator Soup
Calculator Soup: Long Addition Calculator
Add whole numbers and decimal numbers using long addition showing work. This calculator shows all the steps for adding numbers with long addition.
Alabama Learning Exchange
Alex: Battle to the Death: Adding Integers
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,...
AAA Math
Aaa Math: Adding Three Digit Numbers
Read through this explanation of how to add three digit numbers. Use the online game to practice this skill. The game will keep running totals of your correct and incorrect answers. It will also show you a percent score of the correct...
Lizard Point Quizzes
Lizard Point: Subtraction Practice
At this site from Lizard Point Consulting, you can practice several different levels of difficulty of subtraction problems that use 1-digit numbers all the way up to 3-digit number subtraction problems that require regrouping. You can...
CK-12 Foundation
Ck 12: 2.5 Simple Rational Models
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...
PBS
Pbs: Gauss Arithmetic Sequence Strategy
Learn how mathematician Karl Friedrich Gauss figured out how to sum up any arithmetic sequence without having to add up each and every term. This video focuses on using your critical thinking to follow along as Gauss determines his...
AAA Math
Aaa Math: Subtraction
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.
Calculator Soup
Calculator Soup: Roman Numeral Calculator
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...
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