Vocabulary
A letter, such as n, that represents an unknown amount that can vary or change in an expression or an equation
variable
7 less than a number
n - 7
Using mental math, fill in the missing numbers: 7 x 86
? ( ? + ? ) =
(you do not need to solve it)
7 (80 + 6)
What is the rule AFTER solving Parentheses and Exponents for the Order of Operations?
multiply or divide (whichever comes first in the problem)
Simplify
3x + 8y + 13x - 5 + y
16x + 9y - 5
A mathematical phrase involving a variable or variables, numbers, and operations (with no equal sign) is called....
expressions
Four times a number, plus 8
4n + 8
10(2x - 5)
20x - 50
What is the LAST operation you would do to solve this problem.
16 - 5 x 3 + 2 + (5 - 1)
addition
7 ( 3x + 5y)
21x + 35y
What are the Order of Operations?
Parentheses, Exponents, Multiplication and Division, Addition and Subtraction
5 less than a number times 10
10n - 5
6(5y + 3x)
30y+18x
What is the answer to this problem?
8 x 6 - 4 x 3
36
If r = 13
5r + 97
162
The order that numbers are calculated so that everyone gets the same answer.
order of operations (pemdas)
22 more than a number
n + 22
Factor this expression
32 - 16x
16 (2 - x)
Evaluate:
4 x (32 - 2) + 18
46
Simplify
9(5x)
45x
What math strategy/property would you use to solve this problem? 5(4 + 3x) (use the math vocabulary term)
Distributive Property (double rainbow)
Four less than a number times 2
2n - 4
Factor this expression
28x + 12y
4 (7x + 3y)
Solve if x = 16 and y = 4
2x + 4y - 10
38
Simplify
3x + 2x + 4 + 5y + y + 1
5x + 5 + 6y