Let’s keep celebrating Math Awareness Month with another fun video! Today we see our friend Kevin take a job at the Car Wash of Doom. As you’d guess from the name, just about everything goes wrong at this car wash — and it would all go better if Kevin could do the math. Regular car washes do a pretty good job: there are more than 110,000 car washes in the US, and together they wash 8 million cars a day! Hopefully they do a better job than our friend here — watch to find out why!
Wee Ones: If you’re spraying a hose for 4 seconds, what numbers do you say to count those seconds? Count up to 4! Now try counting down from 4!
Little Kids: If Kevin’s power washer knocks off 2 front tires and 1 back tire, how many tires does he knock off?Bonus: If 8 fish come out of the hose and all but 3 of them squirt into the car, how many fish land in the car?
Big Kids: Many car washes close during freezing weather. If your car wash runs from the start of March to the end of November, during how many months is it open?Bonus: If America washes 8 million cars a day, how many days would it take to wash a car for every one of our 320 million people? (Hint if needed: How many days would it take to wash 32 million cars? and then how does the answer differ?)
Answers:
Wee Ones: Counting up: 1, 2, 3, 4! Counting down: 4, 3, 2, 1!
Little Kids: 3 tires.Bonus: 5 fish.
Big Kids: 9 months.Bonus: 40 days. It would take 4 days to wash 32 million cars, then you need 10 times as long for 10 times as many cars.
