Find out how to use mental methods when doing addition and subtraction in your head with this Bitesize Primary Second Level Maths guide.

Subtracting isn’t as straightforward in Excel as it seems, simply because there’s no actual command to subtract numbers. Instead, you have to use a formula with the subtraction operator.

The researchers found that, without an explicit prompt to think about subtraction, participants systematically defaulted to adding features rather than taking them away.