Cross multiplication explained with real examples: the direct case, the inverse case, and above all how to spot which of the two you need, which is where almost everybody goes wrong. With the calculator on screen so you can see exactly which key is pressed.
► Cross multiplication calculator, free and no sign-up: https://tutoriolab.com/en/rule-of-three/
Direct and inverse, with the working shown and the answer placed in the cross. Downloads as a PDF.
► Free scientific calculator: https://tutoriolab.com/en/calculator/
📄 The written steps, with screenshots: https://tutoriolab.com/en/regla-de-tres/
📌 More short tutorials like this: https://tutoriolab.com/en/
#crossMultiplication #inverseProportion #basicMaths
