Evaluating Algebraic Expressions
N+5
When n = 3
8
12, 17, 22...
Start at 12 and add 5 each time
4,8,12,
4n
8b+6
when b=5
46
What is a variable?
a letter or a symbol that represents a number
7c-4
when c = 5
31
11,22,33,44,55
Start at 11 and add 11 each time
4,5,6,
(h+2) x 2.5
when h = 5
17.5
What is al algebraic expression?
a combination of one or more variables
2r+3s
when r = 1.2 and s = 2.5
9.9
25,51,77,
6,15,24
9n-3
10n-m
n=3.5
m=3.4
38.4
What is a term
5x-6y+8
when x = -1, y=-2
8,16,32,
start at 8 and multiply by 2 each time
2,8,14
p + 1.5 x 3
when p = 2.5
7
What is the fibonacci sequence?
a number pattern
(5m-n) x p
m=5
n=9
p=3
48
4,16,1024
start at 4 and multiply the number by itself each time.
3n+2
3p+4q-8
when p=-3
q=2
-9
Who is your favourite grade 8 teacher and favourite math teacher?
Ms. Tchillingirian and Ms. Grossi