Repeating Decimals
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Repeating Decimals
• Repeating decimals are decimals that contain a infinite number of digits.
• Examples:
0.333…
7.689689…
9.1
Non Repeating Decimals
• Non repeating decimals are decimals that either end or carry on forever in a random way.
• Examples:
0.3297680486…
2.7
Commutative Properties
• Commutative Property of Addition
•
• Example:
• Commutative Property
• Commutative Property of Multiplication
•
• Example:
abba abba
3773 3773
Associative Properties
• Associative Property of Addition
•
• Example:
• Associative Property of Multiplication
•
• Example:
)( cbacba
)54(65)46( )54(65)46(
)( cbacba
Distributive Property
• Distributive Property
Example:
Example:
• Distributive Property
acabcba )(
acabcba )(
2545)24(5
2545)24(5
Mrs. de Nobrega’s math class
Mrs. de Nobrega’s math class
Identity Properties
• Identity Property of Addition
Example:
• Identity Property of Multiplication
Example:
aa 0 aa 1
505 616
Inverse Properties
• Inverse Property of Addition (Opposite)
For every a, there is an additive inverse –a such that a + (-a) = 0
Example:
5 + (-5) = 0
• Inverse Property of Multiplication (Reciprocal)
– For every a ( ), there is a multiplicative inverse such that
Example:
0a
11
a
a
15
15
Properties of Real Numbers
• Example – Identifying Properties
– Name the property that each equation illustrates. Explain.
•9 + 7 = 7 + 9
•
• t + 0 = t
• –(q + 3)= -q - 3
)34(3)4( dd
Properties of Real Numbers
• Answers:
– Commutative Property of Addition, because the order of the addends changes.
– Associative Property of Multiplication, because the grouping of the factors changes.
– Identity Property of Addition, because the sum of a number and zero is the number.
– Distributive Property, because you are finding the area.