Integers
What number is the opposite of 5?
-5
Simplify:
4x + 5x
9x
Solve:
x + 4 = 10
x = 6
A letter that represents a number.
Variable
Simplify the fraction:
4/20
1/5
A plane flies 8,500 feet above sea level. Write an integer to represent the location of the plane.
8,500
Simplify:
2x + 4 + 3x
5x + 4
Solve:
3x = 36
x = 12
A mathematical sentence that does NOT contain an equals sign.
Expression
You pay $30 to for 5 gallons of gas. What is the cost per gallon?
$6 per gallon
You place a point on a graph at (-3, 4).
What is the y-value of the point?
4
Simplify:
2(4x + 1)
8x + 2
Solve:
x - 27 = 45
x = 72
On the coordinate plane, this is the name of the horizontal number line.
70 miles per hour
You jump off a diving board 6 feet into the air, and travel 4 feet below the water of a pool. How far did you travel in total?
10 feet
Simplify:
5(3x + 2) - 3x
12x + 10
A farmer plants 6 rows of carrots (c). When he finishes, he has planted 42 carrots. Write and solve an equation for how many carrots (c) are in each row.
6c = 42
c = 7
Two expressions set equal to each other.
Equation
Four apples cost $2.80. How much does each apple cost?
$0.70, or 70 cents.
What Quadrant (I, II, III, or IV) is the point (-4, -6) in?
Quadrant III
Simplify:
7x + 3y - 4x + 2 + 6y - 1 + x
4x + 9y + 1
3x + 2x + 4x = 36 + 54
x = 10
A three-dimensional shape with 18 identical edges and 6 identical faces.
Cube.
Fully Simplify:
72/99
8/11