Change a rate from one pair of units to another

Answer Key - Grade 7 Math Worksheet - Challenge Me

Circle the best answer, or write your answer on the line.

1. 1.

   Kira's car drives 50 miles per hour. Remember: 1 mile = 5,280 feet and 1 hour = 3,600 seconds. How many feet per second is that? Round to the nearest tenth.

   73.3
2. 2.

   Milo's school bus travels 40 miles per hour. Remember: 1 mile = 5,280 feet and 1 hour = 3,600 seconds. How many feet per second is that? Round to the nearest tenth.

   58.7
3. 3.

   Noah's bike rolls 22 feet per second down a hill. Remember: 1 mile = 5,280 feet and 1 hour = 3,600 seconds. How many miles per hour is that?

   15
4. 4.

   Pia's car passes a sign at 66 feet per second. Remember: 1 mile = 5,280 feet and 1 hour = 3,600 seconds. How many miles per hour is that?

   45
5. 5.

   Tala's toy car does 20 feet per second, and a real bike does 15 miles per hour. Remember: 1 mile = 5,280 feet and 1 hour = 3,600 seconds. Which is faster?

   • They are equal
   • 20 feet per second
   • 15 miles per hour
6. 6.

   Zee's sprinter runs 10 meters per second, and a bike does 30 kilometers per hour. Remember: 1 kilometer = 1,000 meters and 1 hour = 3,600 seconds. Which is faster?

   • They are equal
   • 30 kilometers per hour
   • 10 meters per second
7. 7.

   Ari's toy robot rolls 50 meters per minute, and a walker goes 3 kilometers per hour. Remember: 1 kilometer = 1,000 meters and 1 hour = 60 minutes. Which is faster?

   • They are equal
   • 50 meters per minute
   • 3 kilometers per hour
8. 8.

   Esme's toy cart creeps along at 45 feet per minute. Remember: 1 foot = 12 inches and 1 minute = 60 seconds. How many inches per second is that?

   9
9. 9.

   Jun's wagon rolls 120 feet per minute. Remember: 1 foot = 12 inches and 1 minute = 60 seconds. How many inches per second is that?

   24
10. 10.

    Kira's trailer rolls along at 150 feet per minute. Remember: 1 foot = 12 inches and 1 minute = 60 seconds. How many inches per second is that?

    30