Ballpark — October 25, 2026
Answers to that day's 5 daily estimation questions.
About how much caffeine is in a single shot of espresso?
~65 mg
Espresso is concentrated, but the serving size is small.
How many teaspoons are in one tablespoon?
3 tsp
In US measures, 1 tablespoon equals 3 teaspoons.
About how many milliliters are in a standard 16.9-oz water bottle?
500 mL
That common “single bottle” size is basically half a liter.
About how many calories are in a Big Mac?
~580 calories
Many fast-food burgers land in the 500–700 calorie range.
About how many calories are in one tablespoon of peanut butter?
~95 calories
Peanut butter is calorie-dense: about 90–100 calories per tablespoon.