Algebra Vocabulary
What is a letter used to represent a number?
Variable
Write an expression for: 5 more than a number n
n + 5
Evaluate: x + 4 when x = 3
7
Simplify: 2 + 2x
2 + 2x
Evaluate: 3 + 5 × 2
13
What is a number multiplied by a variable?
Coefficient
Write an expression for: 7 times a number m
7m
Evaluate: 4x when x = 5
20
x + x + 3
2x + 3
(6 + 2) × 3
24
What do we call numbers and variables separated by + or − signs?
Terms
Write an expression for: 10 less than a number y
y − 10
2a + 3 when a = 4
11
Simplify: 3x + 5x
8x
Evaluate: 12 − 4 ÷ 2
10
What is a mathematical phrase with numbers, variables, and operations called?
Algebraic expression
Write an expression for: Half of a number p
p ÷ 2 or ½p
Evaluate: 6 + 2n when n = 3
12
Simplify: 4y − 2y + 1
2y + 1
Evaluate: (8 − 3)²
25
What is the number added to, subtracted from, multiplied by, or divided by a variable called?
Constant
Write an expression for: Triple a number x, then subtract 4
3x − 4
Evaluate: 5(b − 1) when b = 6
25
Simplify: 2(x + 3)
2x + 6
18 ÷ (3 × 2) + 4
7
What is the name for expressions that have the same variables raised to the same power?
Like terms
Write an expression for: Four more than twice a number r
2r + 4
Evaluate: 3(x + 2) when x = 4
18
Simplify: 5a − 2 + 3a + 6
8a + 4
Evaluate: (10 − 6) × (8 ÷ 2)
16