Math 7 Review Quiz #1

The water depth of a lake went down 28 inches one year, then went down another 4 inches the following year. Which expression represents the total change in the level of the lake over the two years?

• -4-(-28) inches

• -28-(-4) inches

• -28 + (-4) inches

• 4+ (-28) inches

A helicopter's altitude dropped 275 feet each minute for 5 consecutive minutes. Which expression represents the change in the helicopter's altitude over this time period?

• -275 x 5

• -275 x (-5)

Marla parkered her car 3 floors below ground level at a hotel. She got in an elevator and went 25 floors up to her room. Then she went 16 floors down to go to the fitness center. What floor is the fitness center on?

• 16

• 44

• 6

• -6

• 4

• 8

• -4

• -8

• $6.95

• $7.15

• $7.35

• $7.60

• 5

• 6

• 7

• 8

• -108

• -9

• 108

• 9

Which set of numbers contains only perfect squares?

• {4,12,20,64}

• {1,8,24,75}

• {25,50,150,200}

• {9,16,49,121)

Between which two consecutive numbers does the square root of 18 lie?

• 3 and 4

• 4 and 5

• 6 and 7

• 9 and 10