associative property
DESCRIPTION
Associative Property. By Monica Yuskaitis. 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. - PowerPoint PPT PresentationTRANSCRIPT
The Associative Propertyis 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.
The numbers with parentheses around them are counted as
one number.
(4 + 5) + 9 + 3 =
6 x 3 x (8 x 4) =
Therefore, the operations inside the parentheses must be
done first.
(4 + 5) + 9 + 3 =
6 x 3 x (8 x 4) =
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 = 164 + (3 + 9) = 16
Definition
Parentheses – the enclosing symbols ( ) which indicate that the terms within are considered as one unit.
(4 + 3) + 9 = 16
Order of Operations
The operations within parentheses must be done first before the other operations.
(4 + 3) + 9 = 167 + 9 = 16
Solve these problems
(76 – 13) + 20 =
60 – (45 - 23) =
(329 + 200) – 125 =
75 – (25 -13) =
88 + (55 – 13) =
8338
404
63130
Solve these problemsLet n = 5
(16 – n) + 4 =
n – (3 + 1) =
(n + n) – 8 =
24 – (n +7) =
14 + (n + 13) =
151
2
1232
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