View
214
Download
0
Category
Preview:
Citation preview
Adding and Subtracting IntegersReview for Test #1
3 + (-15)
ANSWER
Different signs subtract. Take the sign of the greater number, then you’ll be exact.
-12
-7 + (-2)
ANSWER
Same signs, keep and add.
-9
-6 + 11
ANSWER
Different signs subtract. Take the sign of the greater number, then you’ll be exact.
5
-4 - 6
ANSWER
Use a number line. Go to the left when negative and to the left when subtracting.
-10
- 5 – (-8)
ANSWER
Use a number line. Go to the left when negative and to the right if there’s a negative and subtraction together. - (-8) means do the opposite of subtracting 8.-5 + 8 = 3
The low temperature in Anchorage, Alaska, is -15°F wile the low temperature in Lindale, Texas is 32°F. Write an expression to find the difference between the low temperatures in Lindale and Anchorage, then solve.
ANSWER
32 – (-15)47
Kyle received a notice from his bank that his account was overdrawn by $14. He made a deposit that brought his balance to $50. How much money did Kyle deposit?
ANSWER
-14 + x = 50x = 64
A submarine travels 330 feet below sea level. If the submarine ascends 125 feet, what integer expresses the submarine’s new position?
ANSWER
-330 + 125
-205
When Bonita started driving at 4pm, the temperature was 12°F. When she arrived home at 10pm, the temperature was -5°F. What was the difference in the temperatures at 4pm and 10pm?
ANSWER
12 – (-5)
17
During the first round of a game, Ravi had a score of -27 points. He earned 35 points in the second round. What was Ravi’s score after the second round?
ANSWER
-27 + 35
8
By noon, the temperature increased 21 degrees from the morning low of -13°F. What was the temperature at noon?
ANSWER
-13 + 21
8
A shark swims at a depth of 275 feet below sea level. After sighting a whale, the shark moves 190 feet closer to the surface. What integer represents the shark’s new depth?
ANSWER
-275 + 190
-85
Which best describes the classification for the following number set?
{ -1 3.5 13
A. Counting NumbersB. Whole NumbersC. IntegersD. Rational Numbers
ANSWER
Rational Numbers- any number that can be written as a fraction is considered to be a rational number
Give the set of numbers below, which are classified as integers?
10 1.25 -2 -3.3 0
Answer
10, -2, and 0
The other numbers would be classified as rational numbers.
What value does point B represent on the number line?
What is the opposite of point B?
What is the absolute value of point B?
Answer
What value does point B represent on the number line? -7
What is the opposite of point B? 7
What is the absolute value of point B? 7 (Point B is 7 numbers away from zero.)
Mrs. Martin is thinking of 2 mystery numbers. She gives 2 clues as shown in the table.Clue 1: The numbers are opposites.
Clue 2: The distance between the numbers on the number line is 20.
What are the mystery numbers?A.-5 and 5B.-10 and 10C.-15 and 15D.-20 and 20
ANSWER
Mrs. Martin is thinking of 2 mystery numbers. She gives 2 clues as shown in the table.
Clue 1: The numbers are opposites.
Clue 2: The distance between the numbers on the number line is 20.
What are the mystery numbers?A.-5 and 5B.-10 and 10 C.-15 and 15D.-20 and 20
Which statement is NOT true about the number line?
A. Points L and H represent opposite integers.
B. The value of point G is equivalent to the absolute value of point M.
C. The value of point F is the opposite of the value of point N.
D. The absolute value of point I is the same as the absolute value of point J.
Answer
Which statement is NOT true about the number line?
A. Points L and H represent opposite integers.
B. The value of point G is equivalent to the absolute value of point M. Point G has a value of -6 and the distance of point M from zero is 6. These are NOT equivalent values.
C. The value of point F is the opposite of the value of point N.
D. The absolute value of point I is the same as the absolute value of point J.
Arrange the following numbers in order from least to greatest.
3 -5 -2 0 -1
Answer
-5, -2, -1, 0, 3
Write an equation that could be represented by the model shown.
ANSWER
Write an equation that could be represented by the model shown.
-4 + 3 = -1-4 – (-3) = -1
Recommended