5 + -14 =
-9
5 - (-3) =
8
What are the rules of multiplying integers?
+ x - = -
- x - = +
What do multiplying and dividing positive and negative numbers have in common?
They share the same rules.
What is PEMDAS?
Parenthesis Exponents Multiplication Division Addition Subtraction
The order in which we problems with multiple operations.
-13 + 2 =
-11 on a number line
-16 - (-4)
Turn the problem into an addition problem by adding the opposite.
-9 x 8 =
-72
What makes a division or multiplication problem positive?
Same signs
2 + 5 x 3 =
-5 + -3 =
-8
4 - 7 =
- 3
-14(-3) =
42
-5( 15 - 3 x 6)
15
-9 + -7 =
-16
7 - (-11)
18
-2(-7) =
14
-144/12
-12
24/6 + 3 x 2
10
-7 + 0 =
- 7
The record high temperature for Massachusetts is 104 degrees Fahrenheit. The record low is -18 degrees Fahrenheit. What is the difference between high and low?
122
Jessica joined a gym 8 weeks ago and lost 2 pounds a week. How many pounds has she lost?
16 or -16
30/- 15
- 2
(14x22+33) - 25/4
23