Adding Integers
-8 + (-12)
-20
-4 - 5 =
-9
Will -13 + (-1) be positive or negative?
Negative
2/3 + (-1/3)
1/3
Jordan's football team lost 3 yards on a play. On the next play they received a 10 yard penalty. How many yards did they lose?
WRITE AN EQUATION TO SUPPORT YOUR ANSWER!
-3 - 10 = -13 yards
or
-3 + (-10) = -13 yards
15 + (-22) =
-7
12 - 15 =
-3
Will 24 + (-19) equal a positive number or a negative number?
A positive number.
-18.6 + 7.9 =
-10.7
The temperature was 8 degrees. At night, the temperature then dropped 10 degrees. What is the new temperature?
WRITE AN EQUATION TO SUPPORT YOUR ANSWER!
8 - 10 = -2
or
8 + (-10) = -2
44 + (-21) =
23
-22 - 14 =
-36
Will 60 - (-19) equal a positive number or a negative number?
A positive number.
Because a double negative is the same as a plus. So, 60 + 19 = 79.
-3.5 + 6/10
-2.9
Jeffery spent $12 on a large pizza, and found a $20 bill on the ground. What integer represents the money that Jeffery has?
WRITE AN EQUATION TO SUPPORT YOUR ANSWER!
-12 + 20 = $8
or
20 - 12 = $8
250 + (-125) =
125
34 - (-5) =
39
Will -10 - (-20) be positive or negative?
Positive
Because -10 + 20 = 10
-5 1/2 + 1 3/4
-3 3/4 or -3.75
Kelli is playing a card game, and she lost 15 points. Then on her second turn, she lost 10 points. What is her point total?
WRITE AN EQUATION TO SUPPORT YOUR ANSWER!
-15 - 10 = -25
or
-15 + (-10) = -25
-170 + (-120) =
-290
-60 - (-10) =
-50
Will -17 - 8 equal a positive number or a negative number?
Negative.
-2 6/10 - (-12.3)
9 7/10 or 9.7
A bird is flying 10 feet above sea level, and a fish is swimming 4 feet below sea level. What is the difference in height from the bird to the fish?
WRITE AN EQUATION TO SUPPORT YOUR ANSWER!
10 - (-4) = 14 feet