Variables and Expressions
Order of Operations
Evaluating Expressions
Integers
The Coordinate Plane
100
What is a numerical expression?
An expression that just has numbers.
100
Define PEMDAS using the real words.
Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction
100
Define evaluate as in "evaluate a variable expression?"
You replace each variable with a number.
100
Numbers that are the same distance from zero on a number line but in the opposite directions are called ...
Opposites
100
What is formed by the intersection of two number lines?
Coordinate Plane
200
What is a mathematical phrase that uses variables, numerals, and operation symbols?
Variable Expression
200
2 + 5 x 3
17
200
3ab + c/2 if a = 2 and b = 5 and c = 10
35
200
Define integers.
Whole numbers and their opposites.
200
The x axis and the y axis divide the coordinate plane into ...
quadrants
300
What's the difference between numerical and variable expressions?
Numerical just has numbers and operation symbols, and variable has letters, numbers, and operation symbols.
300
(60 - 9) / 17
3
300
xyz if x = 3, y = 4, and z = 10
120
300
A number's distance from zero on the number line is called its ...
absolute value
300
An ___________ ______ gives the coordinates of a point.
ordered pair
400
Celeste is 15 years old. Which expression gives Celeste's age in "d" years?
15 + d
400
6 x 8 - 6 + 3 - insert groupings symbols to make the answer equal 45.
Put grouping symbols around 6 and 8
400
Your friend evaluates 35 - k / 5 if k=20 and gets the answer 3. Explain your friend's error.
Do the division first.
400
-12 - (-6)
-6
400
Describe how you would get to point at (-3, -6).
Go left two points and up four points
500
The value of cents in 5 quarters
5(25)
500
Write a numerical expression for each phrase and them simplify. sixteen minus the product of two and five
What is 16 - (2 x 5) = 6
500
Jon has test grades of 76, 84, 90,and 94. What is his average grade?
86
500
-3 + 2 + (7) - 7 - (-13)
12
500
In which quadrant would (5, -7) lie?
Quadrant IV (or 4)
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