Number Properties
(3+2) + 4 = 3+ (2 +4)
Associative Property
(7 + 5) x 3
36
What does numerical expression mean?
Number Sentence
Add 58 and 42, then divide by 10
(58 + 42) / 10
7 x 8 = 5 x 10 - 6
False
56 does not equal 44
3 x 5 x 9 = 5 x 9 x 3
Commutative Property
8 + 4 x 2 - 3
13
To solve/ answer
Add 62 to the difference of 90 and 36
62 + (90-36)
9 + 21 - 15 = 8 + 49 / 7
15 = 15
True
Complete the equation and identify the property
353 + ____ = 353
0
Addition Property of Zero
24 + (8-5) x 3
33
What is the order of operations?
PEMDAS
Subtract 24 from the product of 12 and 8
(12 x 8) - 24
57 - 7 x 6 = 12 x 4 + 4
15 does not equal 52
False
Fill in the blank and identify the property
3 x (8 - 4) = (3 x ___) - (3 x 4)
8
Distributive Property
5 x (3+8) - 28
27
What is the difference between an equation and an expression?
An equation has an equal sign and an expression does not
Subtract 18 from the quotient of 80 and 2
(80/2) - 18
(28 - 7) x 3 = 9 x (28/4)
63 = 63
True
Use the Distributive Property to find the Product
9 x 16
(9 x 10) + (9 x 6)
144
44 / 11 + 3 x 3 - 5
8
What are operations?
adding subtracting multiplying dividing
You work 8 hours and earn 9 dollars each hour. You have 30 dollars saved in a bank account. Write an expression to represent the situation.
30 + (8 x 9)
17 x 14 / 7 = 48 - 14
17 x 2 = 34
34 = 34
Is this work correct?
No, they divided first instead of working left to right