Percentages and Unit Conversions

If 45% of the students in Mrs. Moore's class did their homework, what percentage did not do their homework?

• 40%

• 50%

• 55%

• 45%

24 students in a class took an algebra test. If 18 students passed the test, what percent do not pass?
*HINT* Find out how many did not pass the class before you start! 

• 25%

• 75%

• 75 students

• 24 students

The weight limit for suitcases is 23 kg. You want to make sure that you will not be charged baggage fees on your flight back. What is the weight limit in pounds?

1 kg = 2.2 pounds

• 2.2 pounds

• 50.6 pounds

• 21.8 pounds

• 11.5 pounds

The distance between two towns is 120 kilometers. There are approximately 8 kilometers in 5 miles. Which measurement is closest to the number of miles between these two towns.

• 75 miles

• 3 miles

• 192 miles

• 117 miles

Jose wants to buy a new gaming station. He found one on sale for 40% off. He paid $260.45 for his gaming station. What is the original price of the gaming station? You must draw the proportional window to solve this problem, then solve it.

Answer explanation

If you remember how to set up the proportional window and follow the steps to solve you should not go wrong.

The price of a hoodie was reduced from $45 to $23. Is this an increase or a decrease? What is the percentage?

A boat requires 102 gallons of oil to run properly. How much oil is that in quarts.

102 gallons x 4 quarts

1 1 gallon

Mathematical Equivalence

ON

Change to a percent:

0.36

• 36%

• 360%

• 3.6%

• 0.36%

Change .67 to a percent

• 67%

• 0.0067%

• 0.67%

• 670%

What is 42% expressed as a decimal?

• 0.42

• 4.2

• 42

• 0.042