# Multiplication

## Learn how to solve real world multiplication problems

(5*5=25) so what you would practicaly do is take 5 and add it by itself 5 times so 5+5+5+5+5=25 its that simple and easy.This is what you need to know.

Basic Concepts First

Memorizing the entire Multiplication Table can seem quite overwhelming at first. The key to learning about multiplication is to break the process down into manageable lessons. This is done through a series of rules or "tricks" that can be learned. Once these have been mastered, you will see that it is only necessary to memorize ten multiplication facts! First, however, there are several key concepts that must be understood.

Rules and Tricks

Now that you understand the basic concepts of multiplication, it is time to look at the repeated patterns which can be found in the multiplication table...and ultimately used to solve times problems. These rules or tricks can be broken down into related fact families to help you learn your multiplication facts:

• 0's: Anything times 0 equals 0 (0 x 2 = 0).
• 1's: Anything times 1 equals itself (4 x 1 = 4).
• 2's: Any number times 2 is doubled (4 x 2 = 8) / (4 + 4 = 8).
• 4's: Any number times 4 is doubled once and then doubled again (6 x 2 = 24) / (6 + 6 = 12...12 + 12 = 24).
• 5's: Use what you know about skip counting by 5 when multiplying by 5 (3 x 5 = 15) / (5, 10 15).
• 9's: When multiplying by 9, use your addition and subtraction. Subtract one from the number you are multiplying. Then, think about the number you would add to it to equal 9. (4 x 9 = 36) / (4 -1 = 3...3 + 6 = 9).
• 10's: Add a zero to any number that you multiply by 10. (6 x 10 = 60).
• 11's: Think of 11 as two ones. Any number times 11 is that number times one and then that number times one again. (3 x 11 = 33) / (3 x 1 = 3...3 x 1 = 3).

References

• The images and information offered in this article are based on the author's experience as a classroom teacher, peer instructor and author of local math curriculum standards