Add
2+ - 2
0
-4-2
-6
(-18)/6
-3
If we are multiplying or dividing, and the signs are DIFFERENT, will the solution be negative or positive?
negative
the difference of 10 and 5
10 - 5
13+9
22
8-8
0
-5 *3
-15
When subtracting, what is the helpful rule?
KEEP. CHANGE. CHANGE.
x increased by 7
x + 7
-3+9
6
12-7
5
(-45)/-5
9
If we are adding two integers, and the sign is DIFFERENT, what do we do?
subtract and keep the sign of the bigger number
the quotient of 14 and 7
14/7
-8 + -5
-13
-16 - -69
53
-12*7
-84
What is a variable?
a symbol that stands for an unknown numerical value
the product of 8 and 12
8 x 12
35 + -18
17
23--81
104
240/20
12
What is an algebraic expression?
a mathematical phrase combining numbers and/or variables
a number to the power of 4
x^4