SchoolCity Retest NR.1-5

In the middle of the afternoon, the temperature outside was 0 °F. An hour later, the temperature had decreased by 20 °F. An hour after that, the temperature had decreased by another 4 °F. What increase in temperature is needed to return to the original temperature of 0 °F?

• 4 °F

• 16 °F

• 20 °F

• 24 °F

Which statement best describes a situation in which opposite quantities combine to make 0?

• A scuba diver swam to a location 25 feet below sea level, then she swam 8 feet deeper.

• A hot air balloon used propane to fly 50 feet higher, then used weights to fly 50 feet lower.

• A child grew 1.5 inches taller one year, then 1.5 inches taller the next year.

• A farmer mowed 5 inches off his grass one week, then it grew 4 inches the next week

Which expression is equivalent to 0?

• (x)(-x)

• x+(-x)

• x/-x

• x-(-x)

What is the result of this subtraction? -7.5 - 4.2 =

• -11.7

• 11.7

• -3.3

• 3.3

The temperature on a mountain peak one day dropped from a high of -25 °C to a low of -50 °C. Which expression gives the total change in temperature?

• -50 + (-25)

• |-50-(-25)|

• |-50+(-25)|

• -50-(-25)

What is the sum of the three numbers below? -20 + (-14) + 8=

• -42

• -26

• 14

• 26

Kimberly bought three kinds of fish for a party, as shown below. 1 1/4 pounds of catfish, 1 5/8 pounds of Crappie, 3/4 pounds of pink fish. What was the total weight of the fish?

• 3 5/8 pounds

• 2 pounds

• 1/4 pounds

• 1 3/4 pounds

What is the value of this expression? 2 - [14 - (-6)]

• 20

• -18

• 18

• 12

A small business owner is determining her profit for one month. Her expenses were $450.51 for utilities, $2,679.82 for rent, and $4,000.00 for employee salaries. She had $11,449.27 in sales for the month. What is her profit?

• $4,550.00

• $4,318.94

• $4,794.45

• $5,024.66

Which statement explains why the sum of -8 and +8 is 0?

• On a number line, +8 is |−8| units to the left of 0.

• On a number line, −8 is |+8| units to the right of 0.

• On a number line, 0 is |–8| units to the left of +8.

• On a number line, 0 is |–8| units to the right of +8.