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A full mental math video may contain 2-8 examples. Only some examples are provided in a given video for demonstration purposes.

Learn how to mentally multiply two whole numbers ending in 5 and of the same value such as the following:

25 x 25
45 x 45
115 x 115
225 x 225
1235 x 1235
3045 x 3045

Other similar techniques for multiplying numbers ending in five are also available in the Mental Math: Unleash The Power e-book.

Example:

For numbers ending in five but a difference of 10 between each set of numbers utilize a different but simple technique to solve for the answers.

25 x 35
45 x 85
95 x 105

Another technique is used when the both numbers end in five but with a difference larger than 10 between them.

35 x 75
45 x 65
55 x 85
95 x 125
105 x 225