Adding Integers
Subtracting Integers
Adding Rational Numbers
Subtracting Rational Numbers
Word Problems
100
Two Parts:
1. -2 + 2 =
2. What is this called?
0
Zero Pair or Opposites
100
1 - 10
-9
100
-3.3 + (-4.7)
-8
100
-8.2 - 4.2
-12.4
100
Which situation could the expression (−19)−4 represent?
a. Kevin had 19 pieces of gum. He gave 4 pieces away.
b. Riana owed David $19. Then she gave him $4.
c. The temperature was -19 degrees. Then it decreased 4 degrees.
d. A submarine was 19 meters below the surface of the ocean. Then it moved 4 meters closer to the surface of the ocean.
c. The temperature was -19 degrees. Then it decreased 4 degrees.
200
-6 + 12
6
200
-8 - (-6)
-2
200
21.8 + (-16.2)
5.6
200
7 3/4 - 4 1/4
3 1/2
200
In the middle of a game, Dawn has a score of -7. At the end of the game, Dawn's score increases by 12. What is Dawn's score at the end of the game?
5 points
300
-45 + 9
-36
300
-41 - (-41)
0
300
-105.75 + 47.25
-58.5
300
-3.8 - (-6.1)
2.3
300
The current temperature is -8 degrees. By how many degrees does the temperature need to change for it to be 7 degrees outside?
It would need to increase 15 degrees
400
The sum of -21.8 and a number is positive. What is a possible value that would make this true.
Many answers: Anything greater that 21.8 will work.
400
−26 − (−37)
11
400
-4.2 + 8.5
4.3
400
-16 5/8 - (-13 3/8)
-3 1/4
400
A diver was 8 meters below the surface of the water. He then dove 5 meters further below. Then he saw a jellyfish and swam up 3 meters to take a photo. What is the diver's new elevation relative to the surface of the water?
-10 meters
500
Write an addition problem to represent the number line. *Include the answer*
-2 + -3 = -5 or
-3 + -2 = -5
500
2 - 4 - 8
-10
500
3 1/4 + (-4 1/2)
-1 1/4
500
-3 1/2 - (-8 1/4)
4 3/4
500
Julian throws a rock into a pond. The bottom of a pond is -12.6 ft from the surface of the pond. Julian is on a patio that is 2.7 ft above the pond. How many feet apart are Julian and the rock?
15.3 feet