A year isn’t exactly 365 days — it’s 365.2564 days! That’s why we have a leap year every four years.
The power of exponential growth is shocking. You can reach the moon by folding a paper of 0.01 mm 45 times.
Zero Is the Only Number That Can’t Be Represented In Roman numerals.
A ‘jiffy’ is an actual unit of time. It means 1/100th of a second.
2 and 5 are the only prime numbers that end in 2 or 5.
The symbol for division (i.e.÷) is called an obelus.
In France, a pie chart is sometimes referred to as a “Camembert”.
-40 °C is equal to -40 °F.
The word “mathematics” only appears in one Shakespearean play, “The Taming of the Shrew”.
Zero is not represented in Roman numerals.