Concepts
The sign of the sum when you add two positives.
positive
7 + 12
19
17 - 9
8
|-26|
26
The term for the answer of an addition problem.
sum
The direction you go on a number line when you are adding a positive.
right
-8 + 15
7
22 - 25
-3
What is the unit rate in feet per minute?
20 feet in 5 minutes
4 feet per minute
The term for the answer of a subtraction problem.
difference
The sign of the sum when you add two negatives.
negative
-16 + (-5)
-21
-13 - (-13)
0
Is this a proportional relationship?
x| 1 3 5
y| 2 4 6
No
2/1 = 2 but
4/3 does not equal 2
6/5 does not equal 2
The direction you go on a number line when you are adding a negative
left
25 + (-34) + (-1)
-10
-42 - 8 - (-10)
-40
1.5 + (-0.75)
0.75
The distance a number is away from zero on a number line.
Absolute Value
The direction you go on a number line when subtracting a negative.
right
34 + (-34) + 25 + (-10)
15
99 - 124 - 0
-25
4.2 - (-3.7)
7.9
Sing the ADDING INTEGERS song!
Same signs: Add and Keep
Different signs: Subtract...Use the sign of the bigger number then you'll be exact!