Learn why adding the digits of a number will allow you to see if the number is a multiple of 9. This video is recommended for people interested in math tricks.
Learn how to easily calculate the least common multiple and greatest common factors of numbers. You will be able to apply this trick in real-world problems.
In this video, I use a problem from The Moscow Puzzles: 359 Mathematical Recreations and turn it into a linear equation. After that, I solve it by using inverse operations on both sides. This is recommended for people who are learning prealgebra, as solving these types of equations is important to learning prealgebra.
NOTE: At 0:46 in the video, I write an inequality incorrectly. The inequality sign should be flipped, so that a < b.
In this video, you will see an example of a counting problem.
In this video, you can learn about mean, median, and mode. These are concepts that you will frequently hear about in data and statistics. I explain what all of the terms mean, explain how to find the mean, median, and mode, and give several examples/questions. There are additional practice problems at the bottom of the prealgebra section.
In this video, you will see me solving a three part problem about time, speed, and distance. This video is recommended for people in prealgebra or fifth grade, people studying speed, time, and distance, or anyone who has enjoyed my other prealgebra videos. I used Seesaw.com in this video, which is where I put the question and did my work. I compiled the video on Wevideo.com.