Winning Decimals - Answer Key

Grade Levels: 3 - 5

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? (Sterling Marlin and Rusty Wallace)



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



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



4. Assuming the racers maintained these average speeds in the actual race, who would come in first, second, and third place? (1^st place, Dale Earnhardt; 2^nd place, Mark Martin; 3^rd place, Bobby Labonte)



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



6. Who should come in fourth? (Tony Stewart)



7. Of the qualifiers, who should come in last place? (Ricky Rudd)



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? (one tenth)



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? (6 thousandths of a mile per hour)



10. If next year’s race officials decide to raise the qualifying speed to 172.2, which speeds above will not qualify? (Sterling Marlin, Rusty Wallace, Ricky Rudd)