PEMDAS
What does the P in PEMDAS stand for?
Parenthesis
Write 2x2 as an exponent.
22
(43-20)-2x5
13
When you add zero to a number or multiply a number by zero it stays the same. What property is this?
Identity
5(10+4)
70
What happens if you have no parenthesis
Move to the next operation (skip it)
What is 7x7x7x7 in exponential form?
74
(12+4)÷(11-7)
4
Which property changes the grouping/parenthesis?
Associative
4(3x+7)
12x+28
If you have both multiplication and division, which comes first?
Whichever is further left
What is the expanded form of 43
4x4x4
5x6+(-12)÷2x3
12
What is the operation where you add or multiply by a number’s opposite to “undo it?”
Inverse
6x+18
Write an equivalent expression
6(x+3)
4x-2
The x in this expression is called a what?
Variable
4 to the power of 2 is also called what (42) ?
Four squared
2c - 11d - 11 - c
c -11d - 11
Which property multiplies a single term across a sum or difference inside parentheses?
Distributive
-3(2x-5)
-6x+15 or 15-6x
3+(4-82) - 7
What operation comes first. Be specific!
Exponents
Two to the power of three is also called what (23)?
Two cubed
1/2 (250)- 102 + (12-9)3
52
What is the operation where order doesn’t matter?
Commutative
2x(4 - 1)
8x-2x=6x