The document provides information about integers and order of operations. It defines integers as positive and negative numbers including zero. It explains how to compare integers using less than, greater than, and equal signs. It also defines absolute value as the distance from zero on a number line and provides examples. Rules for multiplying, dividing, adding, and subtracting integers are outlined. Finally, it discusses order of operations and provides examples of solving expressions using PEMDAS.
Powerpoint presentation about Division of Integers. Best for demo teaching. Designed for an online class and face-to-face with review, motivation, groupings, quiz, and homework.
This tutorial provides fundamental concepts such as:
- Absolute Values
- Basic Operations with Signed Numbers
- PEMDAS rule
in order to properly handle simplification of mathematical expressions.
Powerpoint presentation about Division of Integers. Best for demo teaching. Designed for an online class and face-to-face with review, motivation, groupings, quiz, and homework.
This tutorial provides fundamental concepts such as:
- Absolute Values
- Basic Operations with Signed Numbers
- PEMDAS rule
in order to properly handle simplification of mathematical expressions.
Algebra is used in many field in many different ways to solve equation problems, and in business algebra is also used or in our day to day life it is also used. ... Algebra is a way of keeping track of unknown values, which can be used in equations.
Algebra is used in many field in many different ways to solve equation problems, and in business algebra is also used or in our day to day life it is also used. ... Algebra is a way of keeping track of unknown values, which can be used in equations.
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http://sandymillin.wordpress.com/iateflwebinar2024
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2. What are Integers
• Integers are positive and negative numbers
and zero
-10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10
3. Comparing Integers
• Each positive number has an opposite negative
number.
• Positive numbers are larger than negative numbers
• To compare integers, a less than sign (<), a greater than
sign (>) or an equal sign is used.
Think of an alligator.
• Examples:
-5 < 2
9 > -3
-7 < -5
• You can think about it this way: if you spend $7, you will have less
money left over than if you spent only $5.
4. Absolute Value
• Absolute Value is the distance an integer is
from zero on a number line
The absolute value is always a positive
• Expressed with bars on both sides of the
number
– Example: |5|=5
– Example: |-7|=7
-10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10
6. Why Learn Integers?
Some word problems require integers.
At 8:00 a.m. it was 10 degrees below zero. By 3:00
p.m., the temperature had risen 35 degrees. What
was the temperature at 3:00 p.m.?
-10 + 35 = +25 degrees above zero.
Most importantly, Algebra requires knowing integers.
9. Multiplying and Dividing have the
same rules
If SAME signs = Positive Answer
+2 x +3 = +6 + + +
-2 x - 3 = +6 - -
If Different signs = Negative Answer
+2 x-3 = -6 + - -
- 2 x +3 = -6 - +
13. Adding Integers
Rule Add/Subtract
Same signs = 1+3= 4
add numbers - 1 +-3 = - 4
Different signs = -3+4= 1
take the difference 3 +- 4 = -1
When adding, always keep sign of the largest
absolute value
14. Adding Integers - Practice
1) 5 + 2- = 3 DIFFERENT signs
Take the difference
2) -12 + - 3 = - 15 SAME signs
Add numbers
3) -7 + 4 = -3 DIFFERENT signs
Take the difference
16. Subtracting Integers
Rule Add/Subtract
Change it! -1 - 3 =
subtraction sign - 1 +3 =
to plus sign
Switch it!
sign of 2nd number - 1 + -3 =
Solve it! using adding rules
- 1 +-3 = -4
Another way to say this: Rewrite the subtraction problem as an addition
problem in which you add the opposite of the number being subtracted.
19. Assignment -- Integers
IXL.com -- Integers
Get a Smart Score of 100 on all of these!
Level H. I.6 (Adding)
I.8 (Subtracting)
Level J. C.3 (Add/Subtract)
C.7 (Mult/Division)
Level H. X.3 (All Integers)