I’m a zero at mental arithmetic. It’s true—I struggle with this skill—but I want to focus on the phrase itself. In our language, we often equate zero with something negative. But zero is the only real ...

Looking for more on negative numbers? Revise with our National 4 Applications of Maths guide. N4 Applications of Maths - Negative numbers. revision-guideN4 Applications of Maths - Negative numbers Use ...