Download presentation

Presentation is loading. Please wait.

Published byBaldwin Caldwell Modified over 8 years ago

2
IN ALGEBRA COUNTY DIVIDING INTEGERS

3
5 DIVIDED BY 6 CAN BE WRITTEN:

4
5 DIVIDED BY 6 That’s the best way.

5
could mean 12 m&m’s divided among six people. Each person has a dixie cup. What does division mean?

11
could mean 6 m&m’s divided among four people. Each person has a dixie cup.

15
DIVISION RULES FOR NEGATIVE NUMBERS ARE THE SAME AS FOR MULTIPLICATION

16
Therefore: Positive positive = Positive negative = Negative positive = Negative negative = + - - +

17
The number 1 is very important in Algebra County: 1

18
Write these in your notes:

19
“Subtracting” Integers In Algebra County

20
In Algebra County, we don’t actually subtract. We think of the minus sign as a negative. 3 - 5 We can circle the number with its sign. We have 3 and negative 5

21
-4 - 5 Negative 4 and negative 5 -1 + 3 Negative 1 and 3 7 - 2 7 and negative 2 -9 2 5

22
Remember how we put a “1” in places where it is understood to be? 3 - (- 5) 3 and negative 1 times negative 5 1

23
-4 - (- 5) Neg 4 and neg 1 times neg 5 -1 - (- 3) Neg 1 and neg 1 times neg 3 7 - (- 2) 7 and neg 1 times neg 2 1 1 1

24
-4 - (- 5)1 -4 + 5 Negative times negative is positive. 1 The answer is: We multiply before adding Write these in your notes:

25
-1 + 3 Negative times negative is positive. 2 The answer is: -1 - (- 3)1 We multiply before adding

26
7 + 2 Negative times negative is positive. 9 The answer is: 7 - (- 2)1 We multiply before adding

27
-3 + 1 Negative times negative is positive. -2 The answer is: -3 - (- 1)1 We multiply before adding

28
Now you have learned how to “subtract” Without subtracting

29
This is a symbol used in math. It shows that a number is definitely positive and is called the absolute value symbol.

30
We put numbers or variables inside the lines. = The answer is 3 because the absolute value of anything is positive.

31
= Even if we have a negative inside the absolute value sign:

32
Here’s an example:

33
= We add the numbers inside first. =

34
The End

Similar presentations

© 2024 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google