Hi, this is Scott for about.com today I am gonna show you how to make a cheat sheet for multiplying negative and positive numbers.

Writing down these simple rules in clear steps will help you both remember how to perform these calculations in the future and also can serve as a quick reference guide when solving these types of math problems. First, I will show you the basic rules for multiplying numbers (integers) and some examples to illustrate these concepts.

Know the Rules for Multiplying Positive and Negative Numbers

It is helpful to not only write down the rules on the cheat sheet but also an example or two for each rule. This will prevent you from getting confused on how to perform the rule when using the cheat sheet to solve problems in the future.

Positive x Positive = Positive: 3 x 2 = 6

When multiplying a positive number with another positive number you will always get a positive number in your answer. For example, 3 time 2 equals positive 2 because the two numbers multiplied together are both positive.

Negative x Negative = Positive: (-2) x (-8) = 16

When multiplying a negative number with another negative number you will always get a positive number in your answer. For example, negative 2 times negative 8 equals positive 16 because the two numbers multiplied together are both negative.

A Negative Multiplied by a Positive is Always a Negative Number

Negative x Positive = Negative: (-3) x 4 = -12

Positive x Negative = Negative: 3 x (-4) = -12

When multiplying a negative number with a positive number you will always get a negative number in your answer. This is always the answer whether the first number in the equation is either positive or negative.

For example, negative 3 times positive 4 equals negative 12 because one of the numbers is positive and the other number is negative. (-3) x 4 = -12. The same would still be true if the first number was positive 3 and the second negative 4. The answer would be negative 12 because one of the numbers being multiplied is positive and the other being multiplied is negative.

Go to Math.About.com for information on how to make cheat sheets for division, addition, and subtraction of positive and negative numbers. Thank you for watching. For more information, visit: Math.About.com

Writing down these simple rules in clear steps will help you both remember how to perform these calculations in the future and also can serve as a quick reference guide when solving these types of math problems. First, I will show you the basic rules for multiplying numbers (integers) and some examples to illustrate these concepts.

Know the Rules for Multiplying Positive and Negative Numbers

It is helpful to not only write down the rules on the cheat sheet but also an example or two for each rule. This will prevent you from getting confused on how to perform the rule when using the cheat sheet to solve problems in the future.

Positive x Positive = Positive: 3 x 2 = 6

When multiplying a positive number with another positive number you will always get a positive number in your answer. For example, 3 time 2 equals positive 2 because the two numbers multiplied together are both positive.

Negative x Negative = Positive: (-2) x (-8) = 16

When multiplying a negative number with another negative number you will always get a positive number in your answer. For example, negative 2 times negative 8 equals positive 16 because the two numbers multiplied together are both negative.

A Negative Multiplied by a Positive is Always a Negative Number

Negative x Positive = Negative: (-3) x 4 = -12

Positive x Negative = Negative: 3 x (-4) = -12

When multiplying a negative number with a positive number you will always get a negative number in your answer. This is always the answer whether the first number in the equation is either positive or negative.

For example, negative 3 times positive 4 equals negative 12 because one of the numbers is positive and the other number is negative. (-3) x 4 = -12. The same would still be true if the first number was positive 3 and the second negative 4. The answer would be negative 12 because one of the numbers being multiplied is positive and the other being multiplied is negative.

Go to Math.About.com for information on how to make cheat sheets for division, addition, and subtraction of positive and negative numbers. Thank you for watching. For more information, visit: Math.About.com

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