Vocabulary
the name for the unknown number that is represented with a letter
variable
2x + 5x =
3x + 9 = 30
x = 7
3x + 15
3(x + 5)
What parts of your body to continue to grow all your life?
Ears and nose
the name for a number whose value will always remain the same (no variable)
constant
2x - 5x
-3x
4(2x-5) = 60
x = 10
8y - 72
Which fish is known for not having a brain or heart?
Jelly fish
the number in front of a variable in a variable term
EX: 5x (what is the 5 called?)
co-efficient
6r + 5 +7r
13r + 5
x/3 + 5 = 20
x = 45
6a - 48
6(a - 8)
What is the smallest prime number?
2
Numbers, symbols and operations (such as + and ×) grouped together that represent the value of something
expression
12r +5 +3r -5
15r
3x + 10 = 2x
x = -10
3z + 9
3 (z + 3)
What is the largest internal organ in the human body?
A mathematical expression that shows the value of the expression using an equal sign
equation
-5 + 9n + 6
1 + 9n
4x + 3 = 35
x=8
2b - 16
2(b - 8)
What does the Richter scale measure?