Integers
Presentation
•
Mathematics
•
5th - 9th Grade
•
Hard
Joseph Anderson
FREE Resource
7 Slides • 13 Questions
1
Multiplying integers
Review and practice multiplying signed numbers
2
Poll
Rate your understanding of multiplying integers before you start this activity.
I don’t get it.
Sometimes I mess up.
This is one of my strengths!
3
Integers are...
the set of all positive and negative whole numbers
{...-3, -2, -1, 0, 1, 2, 3...}
4
The signs on Integers follow these rules when multiplying
5
To help you remember the rules, think of love (+) and hate (-)
if you love to love, that is love
If you hate to hate, that is love
If you love to hate, that is hate
If you hate to love, that is hate
6
Multiple Choice
if you love to love, that is
Love
Hate
7
Multiple Choice
If you hate to love, that is...
Love
Hate
8
Multiple Choice
hate(−)×love(+)=
love+
hate −
9
Multiple Select
Check all of the following that result in a positive (+)?
(−)×(+)
(−)×(−)
(+)×(−)
(+)×(+)
10
Multiple Select
Check all of the following that result in a negative (-)?
(−)×(+)
(−)×(−)
(+)×(−)
(+)×(+)
11
12
Follow the rules to multiply the integers
13
Observe these facts:
We multiply the numbers as usual, no matter what the signs are.
The sign after multiplying is determined by the rules.
A positive number does not have to have a plus sign in front of it (+3=3)
A negative number has to have a minus sign in front of it (-2=-2)
14
Multiple Choice
What is... −3⋅+2=
−1
−6
+6
None of these
15
Multiple Choice
What is 6⋅−2=
−12
4
+12
None of these
16
Fill in the Blanks
Type answer...
17
Multiple Select
Which of the following is equal to −12 ?
(check all that do)
3⋅4
3⋅−4
−3⋅4
−4⋅3
−4⋅−3
18
Multiple Select
Check all the equations below that are correct.
3⋅−3=−9
3⋅3=9
−3⋅3=9
−3⋅−3=9
19
Multiple Choice
4
-4
5
-5
20
Poll
Rate your understanding of multiplying integers after completing this activity.
I still don’t get it.
Sometimes I still mess up.
This is now one of my strengths!
Yep, I'm solid!
Multiplying integers
Review and practice multiplying signed numbers
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