Integer Unit Test

1. The record low temperature in Springfield through 1997 was 40°𝐹 below 0. The record high temperature was 100°F. Write each temperature as an integer.

A) 40, -100
B) 40, 100
C) -40, 100
D) -40, -100

A) -15
B) !-15!
C) +15
D) 15

A) -6
B) -20
C) 20
D) !-6!

A) -8
B) 7
C) -(8)
D) 8

A) 7-23
B) -5-13
C) -9-(-9)
D) 20-(-2)

A) -13-(-16)
B) 1-(-2)
C) 19-16
D) -16-(-11)

7. A mine worker is in a tunnel 15 feet below the ground. He descends another 8 feet. What is his final position?

A) -7
B) -23
C) 23
D) 7

8. A roller coaster begins at 45 feet above ground level. Then it descends 52 feet. Find the height of the coaster after the first descent.

A) -97
B) -7
C) 97
D) 7

A) -19
B) 3
C) -13
D) 19

A) -11
B) 11
C) -1
D) 2

11. A scuba diver is swimming at a depth of -8 feet. She dives down to a coral reef that is at three times this depth. What is the depth of the coral reef?

A) -24
B) 24
C) !-11!
D) -11

A) -0
B) 0
C) -14
D) 14

A) -125
B) -15
C) 125
D) 15

A) 10
B) 11
C) 25
D) 7

A) 81
B) -12
C) -81
D) (-3)⁴

A) 5
B) -5
C) 2
D) -2

A) 8
B) 6
C) -6
D) -8

18. The Bobcats football team gained 15 yards on their first play then lost 9 yards on the next play. Write an addition expression to represent this situation. Find the sum and explain its meaning.

A) -15 +(-9)
B) 15+(-9)
C) 15 + 9
D) 15 + 9

A) 48
B) -48
C) -40
D) 40

A) !-8!
B) -4
C) -8
D) 4

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