Transcript Integers

Integers
Standard:
Write in your notes...
Integer:
Positives, Negatives,
{…, -3, -2, -1, 0, 1, 2, 3, …}
and zero
-5 -4 -3 -2 -1 0 1 2 3 4 5
No decimals, no fractions
Watch the next two vocabulary
words…
Origin:
– The point on the number line labeled zero
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
Negative
Positive
Origin
Real Numbers:
– Any number that is positive, negative, or
zero
Tell you partner in your own
words:
What is “origin”
and what are
real numbers?
Shout out!
Integer or Real Number?
Real Number

-5 -4 -3 -2 -1
0 1 2 3 4 5
Integer
-5 -4 -3 -2 -1 0 1
2
3 4 5
With your partner…
1.
2.
3.
4.
Determine who will be shoulder-partner A and shoulderpartner B
Person A will name the first number in the following example
Person B names the second number, then Person A the next…
Name the order of all the numbers in the coming example
The first
number is…
The next
one is…
Which is Greater?
5, 2, -4, 0, -1

 

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-4, -1, 0, 2, 5
Positive
Numbers

Negative
Numbers
Moving on the Number Line
Choral Response
+
right on
means a move to the _______
the number line
-
left
means a move to the _______
on
the number line
Pencils down…
• Watch the next two examples…
• Look for patterns
Practice
right
+3

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5 + (-7)
= -2

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In your notes...
• When adding two numbers with the
same sign (++ or - -):
Add the number and keep the
sign the same
Example:
5+3=
-13 + (-4) =
8
-17
Story Time
Armando earned $10 by doing his chores at
home, and this is all the money he has.
He discovers… he lost his math book!!
Armando now owes the school $58 for that
nice textbook.
Using his $10 to start paying it off, how
much more does he have to pay?
Tell your neighbor how to find
how much $$ Armando owes.
To find the
Amount of money...
Mathematically, it looks like
this:
$10 + -$58
= -$48
Or
10 + (-58) = -48
Shout out!
Example 4:
Example 3:
-4 +7
=3
-11 + 8
= -3
The answer is… The answer is…
The answer is…
The answer is…
The answer is…
In your notes:
Write a what you think might be the rule
for adding integers with different signs.
Compare your definitions with your partner’s
definitions.
Add to your definitions or revise them if
necessary.
-5 -4 -3 -2 -1 0 1 2 3 4 5