# Math Trick for Multiply by 11 or 25

Related Topics:
More Math Tricks and Trivia
Math Worksheets

The following videos show some math tricks that will help you to do mental math to multiply numbers by 11 or 25 quickly and efficiently.

Math Tricks: Multiply by 11
In this math trick video we look at an easy way to multiply numbers by 11
Examples:
463 × 11
46 × 11
57813 × 11
463870 × 11
Mental Math Secrets (Math Tricks) - Rapidly Multiply by 11's
Can you do 534 x 11 in your mind? Learn to rapidly multiply any number by 11 mentally and impress others with your human calculator super-fast abilities.
Get an edge in school, at work, and in life!
Examples:
1) 17 × 11
2) 25 × 11
3) 39 × 11
4) 69 × 11
5) 534 × 11
6) 815 × 11

Math Tricks: Multiply by 25
In this math video we look at an easy way to multiply numbers by 25.
Examples:
16 × 25
763 × 25
854312 × 25

Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.