Activity
Interactive Mathematics

Interactive Mathematics: Basic Operations With Complex Numbers

For Students 9th - 10th Standards
Add, subtract, multiply and divide complex numbers using these easy-to-follow examples.
Unit Plan
CK-12 Foundation

Ck 12: Complex Numbers

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] A collection of resources that explain complex numbers and how to do arithmetic with them.
Handout
Johan Claeys

Math Abundance: An Introduction to Complex Numbers

For Students 9th - 10th Standards
A complete explanation of complex numbers that includes lessons on adding, subtracting, multiplying, and dividing them, as well as more advanced topics.
Unknown Type
Khan Academy

Khan Academy: Add & Subtract Complex Numbers

For Students 9th - 10th Standards
Practice addition and subtraction with complex numbers.
Unknown Type
Khan Academy

Khan Academy: Graphically Add and Subtract Complex Numbers

For Students 9th - 10th Standards
Add or subtract complex numbers, and plot the result in the complex plane. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Handout
Interactive Mathematics

Interactive Mathematics: Graphical Representation of Complex Numbers

For Students 9th - 10th Standards
A description of the complex plane is given with examples of how to plot complex numbers. Also included is an explanation of how to add complex numbers graphically.
Unknown Type
Khan Academy

Khan Academy: Add and Subtract Complex Numbers

For Students 9th - 10th Standards
Practice addition and subtraction with complex numbers. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Interactive
Calculator Soup

Calculator Soup: Complex Fractions Calculator

For Students 9th - 10th
A complex fraction is a fraction that contains another fraction. Use this Complex Fractions Calculator to do math and add, subtract, multiply and divide complex fractions. Fraction answers are provided in reduced form (lowest terms).