
Introduction to Positive and Negative Numbers
Presentation
•
Mathematics
•
6th - 8th Grade
•
Hard
Joseph Anderson
FREE Resource
5 Slides • 20 Questions
1
2
Positive numbers have no sign in front
Numbers with no signs are understood to be positive
Negative numbers have a (-) sign in front of the number.
3
Open Ended
How can you tell if a number is positive or negative?
4
Multiple Select
Check all the numbers that are negative
4565
-12
845
-1253
-88751
5
The left side of 0 is negative
The right side of 0 is positive
As number increase, they move towards the right
As numbers decrease, they move towards the left
6
Open Ended
How do you know if a number is increasing or decreasing on a number line?
7
Fill in the Blanks
If a number is left of zero it is
8
Fill in the Blanks
If the number is to the right of zero it is
9
Just like with positives, negative numbers are bigger and smaller than others.
All negative numbers are smaller than positive numbers and 0
Negative numbers are opposite in rank than positive.
Positive numbers get bigger as they increase 1, 2, 3
Negative number get smaller as they go from -1, -2 , -3
10
Multiple Choice
Which number is largest?
25
-6548
0
-5
11
Negative and Positive number can be plotted on a number line AND a coordinate plane.
A coordinate plane has a vertical number line and a horizontal number line that meet at the origin or (0,0)
12
Multiple Choice
-5 + 9
4
-4
14
-14
13
Multiple Choice
-3 + (-2)
-1
1
-5
5
14
Multiple Choice
-4 + (-8)
4
-4
12
-12
15
Multiple Choice
16
Multiple Choice
17
Fill in the Blanks
-4 + (-3) = ?
Type answer...
18
Multiple Choice
−8+(−5)=
−3
−13
13
3
19
Multiple Choice
−9+(−12)+(−2)=
−23
23
5
−21
20
Multiple Choice
When adding integers with DIFFERENT signs,
ADD them
SUBTRACT them
MULTIPLY them
DIVIDE them
21
Multiple Choice
When adding integers with similar signs,
ADD the numbers
SUBTRACT the numbers
MULTIPLY the numbers
DIVIDE the numbers
22
Multiple Choice
23
Multiple Choice
24
Multiple Choice
25
Multiple Choice
Bob lost 5 points on page one of his math test and he lost 9 points on page two of his math test. Which equation best describes Bob progress on his math test?
5 + 9 = 14
- 5 + (-9) = - 14
-5 + (-9) = -4
5 + (-9) = 4
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