One-Step equations (+)
a + 3 = 8
5
a - 5 = 4
9
Give me an example of a variable
any letter (ie) alphabet
5a = 25
5
a/9 = 9
81
The four operational Properties?
Associative, Commutative, distributive, Identity
x + 8 = 12
4
a - 10 = 13
23
Define inverse operation
The opposite, signs that undo each other
addition and subtraction
Multiplication and division
25n = 625
25
a/7 = 4
28
The property that says you can +0 or *1 to a number and get the same number back.
3 + 0 = 3 3 x 1 = 3
What are the Identity Properties?
a + 66= 21
-45
a - 56 = 8
64
What is the inverse operation of addition?
Subtraction
18g = 486
27
a/10 = 4
40
The properties that say you can move numbers around if the expression is all addition or multiplication and the answer does not change? 2 + 5 = 5 + 2
What is the Commutative Property?
a + 30 = 120
90
a - 15 = 15
30
Name the 4 operations
addition, subtraction, multiplication, division
12y = 144
12
a/12 = 4
48
The Property that says that addition and multiplication can be regrouped within an expression and keep the answer the same.
(3 + 4 ) + 6 = 3 + (4 + 6)
What is the Associative Property?
a + 12 = 86
74
a - 48= 28
76
What can you do to check your answer when solving?
Plug your answer in
8x = 56
7
b/12 = 7
84
The Property that allows you to mix multiplication and addition. 2 ( x + 5) = 2x + 10
What is the Distributive property?