A symbol (usually a letter) that stands for a number we do not know.
Variable
100
Solve for the variable:
4c = 16
c = 4
100
Solve for x:
3x - 5 = 4
x = 3
100
Solve for c:
12c + (-4) = -4
c = 0
100
Is x = 3 the solution to this problem?
2x = 6
YES
200
A positive or negative whole number.
Integer
200
Solve for the variable:
x - 14 = 3
x = 17
200
Solve for y:
10y + 20 = 40
y = 2
200
Solve for d:
d/6 = 4 + 5
d = 54
200
Which of the following is the correct solution for y in the equation: y/4 = 20
y = 5 y = 20
y = 80 y = 120
y = 80
300
A number on it's own in an equation
A constant
300
Solve for the variable:
m/7 = -5
m = -35
300
Solve for g:
g/5 + 2 = 13
g = 55
300
Solve for b:
11 + b/(-6) = -14
b = 150
300
Is c = 7 the correct solution to this equation?
7c - 7 = 56
NO
400
A number used to multiply a variable in an equation
A coefficient
400
Solve for the variable:
g + (-6) = 22
g = 28
400
Solve for x:
-5x + (-3) = 7
x = -2
400
Challenge! Solve for c:
5c + 4 = 3c + 6
c = 1
400
Is g = 2 the solution to the equation?
-12 = 8 + 2g
NO
500
A statement in math showing that two things are equal
Equation
500
-3y = -54
y = 18
500
Solve for y:
-13 = y/2 - 3
y = -20
500
Challenge! Solve for x:
10x +14 = 16 + 2x
x = 2/8 or 1/4
500
One student says that b = 7 is the correct solution to this equation. Another says b = -7 is the correct solution. Which solution is correct?
b/1 - 16 = -9