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Lesson 9 Rules for Multiplication & Division of Signed Numbers –Inverse Operations . Rules for Multiplication: The product of two positive real numbers is positive real number. In other words a + # x + # = +

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lesson 9 rules for multiplication division of signed numbers inverse operations

Lesson 9 Rules for Multiplication & Division of Signed Numbers –Inverse Operations

Rules for Multiplication:

The product of two positive real numbers is positive real number. In other words a +# x +# = +

The product of two negative real numbers is a positive real number. In other words a -- # x -- # = +#

The product of two signed real numbers that have opposite signs is a negative real number. In other words

+ # x -- #=-- and -- # x + #=--

inverse operations
Inverse Operations

If one operation will UNDO another operation, the two operations are INVERSE OPERATIONS.

7 + 3 – 3 = 7

Addition & subtraction are INVERSE OPERATIONS.

7 x 2 = 7

2

Multiplication & division are INVERSE OPERATIONS.

On line practice:

http://www.quia.com/jg/1669.html