Integers Introduction — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. Monday was -2 degrees and Tuesday was 6 degrees. How many degrees warmer was Tuesday?
A) 8
B) 4
C) -8
D) -4
Going from negative two up to positive six covers eight degrees of warming.
2. A diver is at -45 ft. A second diver is at -80 ft. Which diver is deeper?
A) First diver
B) Second diver
C) Same depth
D) Cannot tell
Negative eighty is less than negative forty-five, so the second diver is deeper.
3. Lia owes $50 and earns $35. Her account integer is now ___.
A) 85
B) 50
C) -15
D) -85
Starting at negative fifty and adding thirty-five raises the balance to negative fifteen.
4. Order from least to greatest: -3, 5, -8, 0, 2. Which list is correct?
A) -3, -8, 0, 2, 5
B) -8, 0, -3, 2, 5
C) 0, -3, -8, 2, 5
D) -8, -3, 0, 2, 5
Sorted least to greatest, integers move from most negative through zero to largest positive.
Part B: Fill in the Blank
Write the correct answer on each line.
1. The change from a temperature of 4 to -3 degrees is a drop of 7.
Going from four down to negative three is a total drop of seven degrees.
2. An elevator goes from floor -2 up to floor 9. The change is 11.
From negative two to positive nine the elevator travels eleven floors upward.
3. The distance of -25 from zero on a number line is 25.
Distance from zero is the absolute value, so negative twenty-five is twenty-five units.
4. Tom had -$8 and deposited $20. His balance integer is now 12.
Negative eight plus twenty raises the account to a positive twelve dollar balance.
5. If the temperature dropped from 1 to -11, the change is -12 degrees.
Falling from one down to negative eleven is a change of negative twelve degrees.