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Listed under:  Mathematics  >  Number (Mathematics)  >  Real numbers  >  Integers
Interactive

The Numberline

An interactive tool that can help students explore a number line, including points representing integers, fractions and decimals

Video

MathXplosion, Ep 40: Kaprekar's operation

Did you know that 6,174 is a very mysterious number? In 1949, the mathematician Dr Kaprekar from India devised a process now known as Kaprekar's operation. First, choose a four-digit number where the digits are all different. Then rearrange the digits to get the largest and smallest numbers these digits can make. Finally, ...