1. Adding Integers
All the information you need to successfully
add positive and negative numbers.

2. First of all, What is an
Integer?
Integers are all of the whole numbers, and their
opposites, including zero.
(. . . -3, -2, -1, 0, 1, 2, 3, . . .)
You can see the integers on the number line below.
-5 -4 -3 -2 -1 0 1 2 3 4
The arrows at the ends show that integers go
forever in both direction.

3. Ok, so what isn’t an
integer?
Integers can’t be fractions or decimals, unless
those fractions or decimals are equivalent to a
whole number.
For example: ⅖ or 1.25 can’t be written as whole
numbers, and are NOT integers.

4. Now, let’s learn how to perform the various
calculations with integers. We will learn the
rules for accurately adding, subtracting,
multiplying and dividing integers.
And sorry, that
doesn’t mean you get
to use a calculator.
We get to use our
BRAINS instead!

5. Adding Integers
We will take a look at a few ways to add integers.
1. The number line model
2. The chip model
3. Using formal rules
If you learn all three ways then you have different
ways to attack a problem, and can choose which
you like best.

7. Try these using the number
line model

8. Here are the answers
How’d you do?

9. Question time
How did you like using the number line model?
What about it made things easier or harder for
you?
What part of the number line model did not
makes sense to you?
Could you use this to solve addition problems if
you had to?

11. Try these using the chip
model

12. Here are the answers
How did that go for you?

13. Question time
How did you like using the chip model?
What about it made things easier or harder for
you?
What part of the chip model did not makes sense
to you?
Could you use this to solve addition problems if
you had to?

15. Try These using the formal
rules

16. Here are the answers
Get’em all right?

17. Question time
How did you like using the formal rules?
What about it made things easier or harder for
you?
What part of the formal rules did not makes
sense to you?
Could you use these rules to solve addition
problems if you had to?

18. Credits
All video content was provided with
permission by Youtube user Bullcleo1
Click his username to access his Youtube
page.