Category: Rules & Formulas (R&F)

Finding the Equation of a Parabola

To find the equation of a parabola, you need some specific data points from the parabola. The following 2 scenarios describe this process. SCENARIO 1 – YOU HAVE THE VERTEX. read more…

Compound Measures – Density (Mass/Volume)

Next on the compound measures is Density. This measure give you the mass of the material PER UNIT OF VOLUME. In terms of formula for the density, we use the. read more…

Compound Measures – Speed (Distance/Time)

Speed is probably the easiest of the 3 compound measures to understand (the other 2 compound measures are Density and Force). We all know about the speed of cars for. read more…

Recurring Decimals to Fractions

Writing numbers containing recurring decimals into fractions involves a few steps. These are described here using a few examples. First, we start with… Key to the above process is to. read more…

Surface Area of Solid Shapes

A reference page showing the formulas of the surface area of some common basic and composite shapes, including: Rectangular Prism Triangular Prism Pyramid Cone Sphere Cylinder Composite shape – Cylinder. read more…

Multiplication – Lattice Method

There are few ways to multiply numbers. The method shown in the video below is one of them

3D Shapes

Below are the most common 3D shapes you will come across and with 3D shapes, you need to be able to work out the volume of these shapes. In a. read more…

(R&F) Algebra – Expanding Brackets

Expanding brackets in algebra means you need to multiply the terms inside the brackets by the term (or terms) that are outside the brackets. Below are some examples. Expanding Single. read more…

(R&F) Algebra – Indices

Working with indices can sometimes be tricky if you don’t know the specific rules of indices. This post shows what the common indices convert to and also how to work. read more…