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Winning Decimals

Extension worksheet

Grades
3 |
4 |
5
Subjects
Mathematics (5,032)

Decimals (150)

Type
Activity (2,892)

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Name ___________________________________________ Date _________________

To qualify for NASCAR’s Daytona 500, car racers must achieve an average speed of 171.6 miles per hour. Below are the results of a qualifying race.

Racer

Average Speed (Miles Per Hour)

Racer

Average Speed (Miles Per Hour)

Bobby Labonte

180.342

Tony Stewart

176.901

Ward Burton

173.712

Ricky Rudd

172.124

Dale Jarrett

172.224

Mark Martin

180.348

Dale Earnhardt

181.159

Rusty Wallace

171.599

Sterling Marlin

171.066

Jeff Gordon

173.756

  1. Which racers did not qualify? ______________________________________


  2. Who was faster, Dale Jarrett or Ricky Rudd? _________________________


  3. Who was faster, Ward Burton or Jeff Gordon? ________________________


  4. Assuming the racers maintained these average speeds in the actual race, who would come in first, second, and third place? __________________________________________


  5. How many thousandths of a mile per hour faster did Rusty Wallace need to drive in order to qualify? ____________________________________________________________


  6. Who should come in fourth? __________________________________________


  7. Of the qualifiers, who should come in last place? ________________________


  8. How many tenths of a mile an hour did Ricky Rudd need to increase his speed in order to match Dale Jarrett’s speed? __________________________________________


  9. How many thousandths of a mile per hour did Bobby Labonte need to increase his speed in order to match Mark Martin’s speed? ______________________________________________


  10. If next year’s race officials decide to raise the qualifying speed to 172.2, which speeds above will not qualify? _______________________________________________________

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