Rational Numbers and Elevation

Use the positive numbers to represent elevations above sea level and negative numbers to represent elevations below sea level. Mary's elevation is 6.5 meters at the beginning of a hiking trail. After walking a few minutes, she has descended 12.2 meters. Which of the following represents her new elevation?

• -18.7

• 5.7

• -6.3

• -5.7

Roger ate 2/5 of a pizza. What percent of a pizza did he eat?

• 40%

• 25%

• 4%

• 5%

What is the quotient of these fractions in lowest terms?

• 6/40

• 6/10

• 3/5

• 12/20

Tina lives 2 ¼ miles from the library. Sonya lives 3 ½ miles from the library. How much further does Sonya live than Tina?

• 1 ½ miles

• 1 ¼ miles

• ¾ miles

• ⅔ miles

• A
• B
• C
• D

⁷/₈ - ¹/₂

• ¹¹/₇

• ⁸/₁₁

• -1 ³/₈

• -1 ¹/₈

Which is NOT a subset of the set of rational numbers?

• -2, -1.1010010001..., ⅔, 4.1

• -0.25, 0, ⅗, 3.888...

• ½, 1.6767..., 2.8, 4

• -5, -4.158392222..., ⅖, 8

Mya needs 1⅔ pounds of clay to make one pot.  What is the greatest number of identical pots she can make from 15 pounds of clay? 

• 6

• 8

• 9

• 25

A scuba diver, who was 25⅔ feet beneath the surface of the water, descended 5½ feet.  From this depth, how many feet must the diver rise to return to the surface?

• 31⅙ ft. 

• 30⅗ ft. 

• 20⅙ ft. 

• 20 ft. 

Which of the following is NOT a rational number?

• -5.43816

• ⅘

• 2.11121314...

• 17