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

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

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

A) 1-(-2)
B) -16-(-11)
C) 19-16
D) -13-(-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) -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) -7
B) 97
C) 7
D) -97

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

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

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) -11
C) 24
D) !-11!

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

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

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

A) -12
B) -81
C) (-3)⁴
D) 81

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

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

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) -40
C) 40
D) 48

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

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