Ballpark — June 7, 2026
Answers to that day's 5 daily estimation questions.
Teeth in a Great White Shark
300 teeth
They lose and replace thousands in a lifetime.
About how much does a gallon of water weigh?
8.34 lb
A gallon of water is about 8.3 pounds.
About how many words are in a typical novel?
~80,000 words
Many novels fall in the 70,000–100,000 word range.
About how many watt-hours of energy does a typical smartphone battery store?
~20 Wh
A phone battery holds only a few dozen watt-hours at most.
Players on a basketball court at once
10 players
Ten players are on the court at once.