math 7 units 1-4 review

Interpret the missing value:

•  Balance: $14.50
  Credit: $31.00
• Balance: $30.00
  Credit: -$15.00
• Balance: -$18.50
  Credit: $29.00
• Balance: -$19.50
  Credit: $30.00

Hidden Treasure Island is about 12 miles long.  Audree has a map of the island.  If the scale on the map is 1 inch = 1/2 mile, what is the length of the island on Audree's map?

• 6 miles
• 24 inches
• 6 inches
• 24 miles

Mr. Smith has an account balance of -$275.78.  He deposits $539.20 into his account.  What is Mr. Smith's account balance now?

• $813.98
• $263.42
• $539.78
• $345.98

The price of a gallon of gasoline dropped by $0.08 on Wednesday and by 0.25 of that amount on Thursday. Which best represents how the price of a gallon of gasoline changed on Thursday?

• –0.32

• –0.02

• 0.02

• 0.32

Which of the following expressions represent a positive number? Choose all that apply.

• 6.1 + (-6.2)

• -4.5 - (-5)

• 
• 
• 3 - (-7)

A 30 oz. jar of mayonnaise is on sale for $2.99
What is the price PER ounce?

• $10.03 per ounce
• $27.01 per ounce
• $0.99 per ounce
• $0.10 per ounce

The air temperature in the North Pole in the morning was 3 degrees Celsius.  By 10:00am the temperature dropped 12 degrees.  By noon the temperature had gone up 5 degrees.  At 3:00pm the temperature went up 9 degrees.  By nightfall the temperature had dropped 16 more degrees.  What was the temperature at the North Pole at nightfall?

• 11 degrees
• 0 degrees
• -11 degrees
• -9 degrees

The average daily temperature in Denton went from -8°F in January to 43°F in March. What was the change in the average daily temperature from January to March?

• 35°

• 51°

• -35°

• -51°

A fish is swimming 7 feet below the water's surface. A turtle is swimming 2 feet below the water's surface. What is the difference in feet where the fish and the turtle is?

• -9 feet
• 14 feet
• 5 feet
• 9 feet

At 2pm, the temperature was 15 degrees. By midnight, the temperature dropped by 30 degrees. What is the temperature at midnight?

• 45 degrees
• -45 degrees
• 15 degrees
• -15 degrees