Changing the subject of a formula Formulas with squares and square roots Target subject appearing twice Test yourself Before reading this guide, it may be helpful to read the guide from Module 3 (M3) ...

Mastering quick square root calculations boosts maths exam performance. Speed and accuracy provide a significant advantage in algebra and geometry. Memorising key square roots and using mental math ...

The ancient Greeks wanted to believe that the universe could be described in its entirety using only whole numbers and the ratios between them — fractions, or what we now call rational numbers. But ...