BedtimeMathFoundation.org | Contact Us

Put That Fish to Work!

by Derek Stump

We just got another great math question about animals. Our friend Graham R. wants to know: how many fish would it take to pull a boat? Well, just one fish might do the trick! Bluefin tuna can grow to be 15 feet long and 1,500 pounds – and they can swim 40 miles per hour. A couple years ago, a 700-pound tuna pulled a boat around for 8 miles. But most fish are much smaller. This fisherman estimates an 8-pound bass could pull 5 pounds. Let’s do some math to figure out how many fish it would take to pull you! 

 
Wee ones: Look at the picture. Do you think there are more than 3 fish in the picture? Hold up 3 fingers to compare.


Little kids: If a tuna pulls you 8 miles, how many miles do you have to swim on your own to go a total of 10 miles? Bonus: How much longer than you is a 15-foot tuna? Subtract your height from 15 feet! 


Big kids: If it takes 40 bass fish to pull a rowboat, and each fish is pulling 5 pounds, how much are they pulling altogether? Bonus: How many of those fish would it take to pull 1 ton – 2,000 pounds?  

Answers:

Wee ones: Yes, there are certainly more than 3 fish in that picture! 


Little kids: 2 miles. Bonus: Different for everyone: that fish might be 10 feet longer than you – or more!


Big kids: 200 pounds. Bonus: 400 bass fish.

Print Friendly, PDF & Email
Top