Vocabulary
It's the unknown in an algebraic expression, and is usually represented by a letter.
A variable
2x+6
x=6
18
5*6-7
23
Write it in exponent form:
5*5*5*5*5
5^5
Simplify 2(x+5)
2x+10
Simplify by combining like terms.
x+x+x
3x
Find the GCF of 6 and 36
GCF = 6
This type of expression only has numbers and operations.
A numerical expression.
5r^3
r=2
40
20-5*8-:2
0
Write it in exponent form:
20
20^1
Simplify
10(6t-3.5)
60t-35
Simplify by combining like terms.
5n^3-5+n+3n^3
8n^3-5+n
Find the LCM of 20 and 40
LCM = 40
When following the order of operations, you should do these two operations last, left to right.
Addition and subtraction
3n-s+6
n=7
s=1
26
30(2^2-2)
60
Write it in expanded form:
9^2
9*9
Write an equivalent expression for
70x+40
10(7x+4)
Simplify by combining like terms.
2w-2w+4w+7w+6
11w+6
Find the GCF of 81 and 108
GCF = 27
When a number is sitting to the very left of a variable, it is a called the ___________.
Coefficient
10k^3
k=3
270
5^3-10*6-:3
105
Write it in standard form and exponent form:
3*3*3
Standard form: 27
Exponent form: 3^3
Write an equivalent expression for:
28x-42
7(4x-6)
Simplify by combining like terms.
8x^2+x+4+7x^2+3x+9
15x^2+4x+13
63
Addition and subtraction are the ONLY operations that separate ________________.
Terms
3(w^2-10)+7
w=5
52
6^2+(2^3*5-20^0)+25
100
In 7^8 the base is ______ and the power is _____.
Base: 7
Power: 8
Simplify
3(x-5)+15x
18x-15
Simplify by combining like terms.
3(x+5)+x+13
4x+28
Find the LCM and GCF of 7 and 20
LCM: 140
GCF: 1