Dive right into the joys of mental math. First, learn the fundamental strategies of mental arithmetic (including the value of adding from left to right, unlike what you do on paper). Then, discover how a variety of shortcuts hold the keys to rapidly solving basic multiplication problems and finding squares.

Running Time

33 mins

Year

2011

Features

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*12* episodes in this series

Episode 1 Math in Your Head!

Dive right into the joys of mental math. First, learn the fundamental strategies of mental arithmetic (including the value of adding from left to right, unlike what you do on…

Episode 2 Mental Addition and Subtraction

Professor Benjamin demonstrates how easily you can mentally add and subtract one-, two-, and three-digit numbers. He also shows you shortcuts using the complement of a number (its distance from…

Episode 3 Go Forth and Multiply

Delve into the secrets of easy mental multiplication: Professor Benjamin's favorite mathematical operation. Once you've mastered how to quickly multiply any two-digit or three-digit number by a one-digit number, you've…

Episode 4 Divide and Conquer

Turn now to the last fundamental operation of arithmetic: division. Explore a variety of shortcuts for dividing by one- and two-digit numbers; learn how to convert fractions such as 1/7…

Episode 5 The Art of Guesstimation

In most real-world situations: such as figuring out sales tax or how much to tip: you don't need an exact answer but just a reasonable approximation. Here, develop skills for…

Episode 6 Mental Math and Paper

Sometimes we encounter math problems on paper in our daily lives. Even so, there are some rarely taught techniques to help speed up your calculations and check your answers when…

Episode 7 Intermediate Multiplication

Take mental multiplication to an even higher level. Professor Benjamin shows you five methods for accurately multiplying any two-digit numbers. Among these: the squaring method (when both numbers are equal),…

Episode 8 The Speed of Vedic Division

Vedic mathematics, which has been around for centuries, is extremely helpful for solving division problems: much more efficiently than the methods you learned in school. Learn how Vedic division works…

Episode 9 Memorizing Numbers

Think that memorizing long numbers sounds impossible? Think again. Investigate a fun: and effective: way to memorize numbers using a phonetic code in which every digit is given a consonant…

Episode 10 Calendar Calculating

The fun continues in this episode with determining the day of the week of any date in the past or in the future. What day of the week was July…

Episode 11 Advanced Multiplication

Professor Benjamin shows you how to do enormous multiplication problems in your head, such as squaring three-digit and four-digit numbers; cubing two-digit numbers, and multiplying two-digit and three-digit numbers. While…

Episode 12 Masters of Mental Math

Professor Benjamin concludes his exciting course by showing how you can use different methods to solve the same problem; how you can find the cube root of large perfect cubes;…

## Comments (1)

I chose this video because I LOVE MATH! I am always finding something that can be put into an equation or solved. When people talk about how long a drive is going to take them or how long it's going to take them to walk from Kennebec Hall to Bennet Hall, in my head I calculate the distance ...Read more

I chose this video because I LOVE MATH! I am always finding something that can be put into an equation or solved. When people talk about how long a drive is going to take them or how long it's going to take them to walk from Kennebec Hall to Bennet Hall, in my head I calculate the distance and the time and figure out what speed they need to go. I collect bottles and cans and enjoy using mental math to figure out how much money I can redeem with the amount that I have. I enjoy the "consistency" in math as opposed to the many interpretations and ideas that one story or phrase can have. I liked his method of learning the basics and then once those have been mastered, earning something more challenging. If you know how to count by 5's then you'll know that multiplying by five is the same thing. I do better with math than I do with language arts because so man things can have multiple meanings and the way an author writes about something can have an entirely new meaning. Math is simple. If you have a certain type of problem there is usually only one way to solve it.

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