Vocabulary
A number on its own in an expression
Constant
The sum of n and 2
n+2
Evaluate x+2 when x=16
18
Simplify: 2x+3x
5x
Simplify: 2×a
2a
The number multiplied by a variable
Coefficient
The difference between x and 5
x−5
Evaluate 3a when a=5
15
Simplify: 6a−2a
4a
Simplify: 3b×2
6b
A single part of an expression separated by + or −
Term
The product of 3 and y plus 12
3y + 12
Evaluate 2x+4 when x=7
18
Simplify: 3x+4y+2x
5x+4y
Simplify: 4a×3b
12ab
A mathematical phrase with numbers/variables but no equals sign
Expression
The quotient of a and 4
a/4
Evaluate 5y−3 when y=6
27
Simplify: 7b−3b+2a
4b+2a
Simplify: 2m2×3bm
6bm3
A mathematical statement that shows two expressions are equal
Equation
The product of 8 and b minus the sum of x and 4
8b−(x+4)
Evaluate 2a2+3b when a=3, b=4
18 + 12 = 30
Simplify: 4x+6b−12x−14b
−8x−8b
Simplify: 4b2g×8b3gf
32b5g2f