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) !-6!
D) -20

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

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

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

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) -7
C) -23
D) 23

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

A) -13
B) 19
C) 3
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) -11
B) 24
C) !-11!
D) -24

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

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

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

A) -81
B) (-3)⁴
C) -12
D) 81

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

A) -6
B) 6
C) -8
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) -40
B) -48
C) 48
D) 40

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

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