In mathematics, many problems begin with everyday stories. These stories may talk about ages, distances, prices, or quantities. To solve…
Evaluation of algebraic expressions and formulae
Algebra is the branch of mathematics that uses letters and symbols to represent numbers. These letters are called variables, and…
Representing Notations in Algebra
In this lesson, let’s look at how to represent notations in algebra. 4 Operations of Algebra Addition and Subtraction In…
Algebra – Using Letters to Represent Numbers
In Algebra, we use letters to represent numbers. These letters are called variables, and they help us describe general rules,…
Problems on Speed
In this lesson, we will look at questions on speed. Example 1: Chung Cheng High School (Main) 2017 Mid Year…
Conversion of Units for Speed
In this lesson, we will look at conversion of units for speed. Before that, let’s first look at the unit…
Speed
Speed tells us how fast something is moving. It is the rate at which distance is covered. There are many…
Proportion
A proportion is a statement that two ratios are equal. For example, if we say that 3 pencils cost 60…
Proportion Questions with More than 2 Quantities
So far, when we solve proportion questions, we usually deal with 2 quantities. However, some proportion problems can involve 3…
Rate
Rate tells us how a quantity changes with respect to time. When you see the word “per”, it usually refers…