Ballpark — July 10, 2026
Answers to that day's 5 daily estimation questions.
GDP of the world
100 USD (trillions)
Crossed the 100 trillion mark recently.
Hours a newborn baby sleeps per day
~16 hours
Newborns often sleep most of the day—commonly 14–17 hours.
About how long is a standard wooden pencil?
~19 cm
A typical pencil is about 7.5 inches long.
About how many hours of listening can wireless earbuds last on a single charge?
~6 hours
Many earbuds land around 4–8 hours per charge.
How many grams of sugar are in a 12-oz can of Coca-Cola?
~39 g
A 12-oz soda often contains around 10 teaspoons of sugar.