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Associative Property By Monica Yuskaitis

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The Associative Property is like a man and woman getting married. First, they are each counted separately, then after they are married they are counted as one, even though they are still separate people.

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Before a couple are married they are considered as two separate people.

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After the marriage they are considered as one.

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These numbers are all separate. 4 + 5 + 9 + 3 = 6 x 3 x 8 x 4 =

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The numbers with parentheses around them are counted as one number. (4 + 5) + 9 + 3 = 6 x 3 x (8 x 4) =

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Therefore, the operations inside the parentheses must be done first. (4 + 5) + 9 + 3 = 6 x 3 x (8 x 4) =

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The numbers are associated together.

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Definition Associative Property – the addition or multiplication of a set of numbers is the same no matter how the numbers are grouped. (4 + 3) + 9 = 16 4 + (3 + 9) = 16

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Definition Parentheses – the enclosing symbols ( ) which indicate that the terms within are considered as one unit. (4 + 3) + 9 = 16

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Definition Parentheses – ( ) are also called grouping symbols (4 + 3) + 9 = 16

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Order of Operations The operations within parentheses must be done first before the other operations. (4 + 3) + 9 = 16 7 + 9 = 16

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Solve these problems (76 – 13) + 20 = 60 – (45 - 23) = (329 + 200) – 125 = 75 – (25 -13) = 88 + (55 – 13) = 83 38 404 63 130

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Check Did you remember to do the operations in the parentheses () first?

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Solve these problems Let n = 5 (16 – n) + 4 = n – (3 + 1) = (n + n) – 8 = 24 – (n +7) = 14 + (n + 13) = 15 1 2 12 32

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Check Did you remember to do the operations in the parentheses () first?

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Insert parentheses to make each equation true 11 – 5 + 1 = 5 15 - 10 – 8 = 13 8 – 2 + 7 = 13 9 + 3 – 2 = 10 11 – (5 + 1) = 5 15 – (10 – 8) = 13 (8 – 2) +7 = 13 (9 + 3) – 2 = 10

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Written by Moncia Yuskaitis Clipart from Broderbund ClickArt 125,000 Deluxe Image Pak Clipart from Corel Gallery by Corel Corp.

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