Ever dreamt of solving math problems in your head with the speed of a calculator? Mental math might seem challenging, but ...

In this KS2 Maths article you'll find out how to use mental methods when doing addition and subtraction in your head. We also have KS2 Maths videos, a quiz and lots of examples.

Fast Percentage calculations in mind using Mental Maths: Calculate almost any percentage in your mind. Simple tricks to calculate percentages like 10%, 20%, 75% and more mentally.

Multiplying by 5 To multiply any number by 5 quickly, simply divide the number by 2 and then multiply by 10. For example, 37 × 5 can be calculated as (37 ÷ 2) × 10, which equals 185 ...

Maths teaching has also shifted to keep pace with the development of computer technology. This is influencing maths instruction from early childhood, right through to Year 12.

SUMMERS: The 14-year-old from India has set the Guinness World Record for mental calculation. SHAPIRO: He's been dubbed the human calculator and can solve complex math problems in his head in seconds.