Primary
Any number multiplied by zero equals zero.
Did You Know? Fun Math Facts for Students
Fun, easy math facts about numbers, shapes and the history of mathematics for students.
12 facts3 stages
Tip for school assemblies: pick 5 to 7 facts from different subjects and start each one with "Did you know that...".
Facts for Primary students
Primary
The angles of any triangle add up to 180 degrees.
Primary
The number 1 is neither a prime number nor a composite number.
Primary
You cannot divide by zero; the result is undefined in mathematics.
Facts for Middle school students
Middle school
2 is the only even prime number.
Middle school
Pi (π) is about 3.14159, and its digits after the decimal point never end and never repeat.
Middle school
The word "algebra" comes from Arabic, from al-Khwarizmi's book on "al-jabr wa'l-muqabala".
Middle school
The numbers from 1 to 100 add up to 5,050; a famous story says the mathematician Gauss worked it out cleverly as a child.
Middle school
The digits 1, 2, 3 used worldwide today developed from the "ghubar" numerals used by Arabs in North Africa and al-Andalus.
Facts for Secondary students
Secondary
Maths lovers celebrate Pi Day on 14 March, because the date is written 3/14.
Secondary
Hexagons fill a surface with no gaps using the least perimeter, which is why bees build hexagonal cells.
Secondary
The number 0.999... (nines repeating forever) is exactly equal to 1.