Evaluating Expressions
Equivalent Expressions
Solving One-step Equations
Properties
Vocabulary
100
5 - 4 + (7 + 4)
12
100
An equivalent expression for 8+8+8+8
4(8) or 4 ⦁ 8
100
x + 10 = 25
x = 15
100
y ⦁ z = z ⦁ y
Commutative Property of Multiplication
100
It means the opposite operation
inverse
200
3(6-2)^2
48
200
an equivalent expression for 4 ⦁ 4 ⦁ 4 ⦁ 4 ⦁ 4
4^5
200
b - 16 = 4
b = 20
200
m + 0 = m
Identity Property of Addition
200
A letter or symbol used to represent an unknown value
variable
300
8 ÷ 8 - 1 + (7 ⦁ 4) + 12
40
300
12a+2b-2a+c+5c+b-a
9a +3b + 6c
300
The goal of "solving" an equation is finding the value of this
The variable
300
n (1) = n
Identity Property of Multiplication
300
A math sentence which states that two expressions are equal
equation
400
5^p + 5(p) when p = 2
35
400
2m - m + p + p + p - 4 + 12 Hint: Combine Like Terms
m + 3p + 8
400
3n = 12
n = 4
400
2 + 4 = 4 + 2
Commutative Property of Addition
400
6, x, and 4y are examples of these
terms
500
z + y - 3z + 4z + 6y when y=3 and z=6
33
500
5y ÷ 5
y
500
Why is it important to do the same operation to both sides of an equation?
To keep the equation BALANCED, EQUAL, or EQUIVALENT
500
(3 + 4) + 9 = 3 + (4 + 9)
Associative Property of Addition
500
the number being multiplied by a variable Hint: (It is located in front of the variable)
coefficient
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