Other
The Organic Chemistry Tutor: Mental Math Tricks
Video tutorial explains how to use a few simple mental math tricks as they relate to basic arithmetic concepts such as addition, subtraction, multiplication, and division. [21:41]
Other
Math Tutor Dvd: Mental Math Secrets! The Secret to Mental Addition
This video lesson explores how to perform fast mental math tricks and speedy calculations that can be applied to addition problems. [12:30]
Math Mammoth
Math Mammoth: A Mental Math Trick: Addition With Nine and Eight
Learn a simple trick to help you add 9 or 8 to a number quickly, and how this can work with larger numbers ending in 9 or 8 as well. [8:59]
Math Mammoth
Math Mammoth: Adding Three or Four Single Digit Numbers Mentally
In this lesson, students are shown strategies for adding several single-digit numbers in their heads. [7:12]
Math Mammoth
Math Mammoth: Add and Subtract Multiples of 100: Mental Math
Learn how to add and subtract multiples of a hundred when working with 3-digit numbers. [8:14]
Math Mammoth
Math Mammoth: Mental Addition of Two Digit Numbers
This video explains some strategies that are helpful for adding two-digit numbers in your head. [8:00]
Imagine Learning Classroom
Learn Zillion: Adding and Subtracting Using Doubles Facts
In this lesson, you will learn to add and subtract by using doubles. [3:42]
Math Mammoth
Math Mammoth: Mental Addition: Add 2 Digit and 1 Digit Number (With Regrouping)
Teaches mental math strategies for adding a two-digit and a one-digit number. [7:41]
Sophia Learning
Sophia: Working Backwards: Lesson 9
This lesson explains how to solve problems starting at the end of the problem. It is 9 of 10 in the series titled "Working Backwards."
Sophia Learning
Sophia: Working Backwards: Lesson 1
This lesson explains how to solve problems starting at the end of the problem. It is 1 of 10 in the series titled "Working Backwards."