There are two main measures: scalar and vector. Scalar is a quantity that has size but hasn’t direction (for example, time, volume, temperature). Vector is a measure that has length and direction (for example, force, acceleration, velocity). In Picture 1 the line AB is represented. It is known that point A is the beginning and

## Cumulative Frequency Graphs

Cumulative frequency is adding up frequencies to provide the running total. It helps us find the median, lower quartile range and upper quartile range in a set of data. Example: Look at the table. Compute the cumulative frequencies by adding them up to have a running balance, then get the upper-class boundaries. Upper-class boundaries are

## Decimal numbers

Decimal numbers are any usual fraction, which can be written as a fraction with the number \(10^{n}\) (n∈N) in the denominator. For example, \(\frac{5}{100} , \frac{236}{1000} , \frac{389}{100}\) . Decimal numbers are written by using dot or comma. An \(\color{blue} {integer}\) is located before a decimal point, and the \(\color{green} {decimal}\) is located after the decimal point.

## Fractions

Ordinary fractions are used for counting the parts of a subject. For example, the amount of juice in the glasses can be described by fractions. In order to write a fraction, you need to know how many parts the whole is divided into and how many of such parts are taken. You know that “half”

## Algebraic Expression

In Algebra, we commonly see x, y and others. Why do we use letters? How can we solve it? An algebraic expression is a combination of integer constants, variables, exponents and algebraic operations such as addition, subtraction, multiplication and division. 5x, x + y, x-3 and more are examples of algebraic expression. A constant is

## Simultaneous Equations

Solving Simultaneous Equation Have you heard simultaneous equation? How can we solve if the equation has two unknown value? The simultaneous equation is an equation with two or more unknown value which the value of the unknown is same to the other equation. There is a three method to find the value of unknown which

## Loci Definition

Imagine a pilot flying an aeroplane at a certain speed, direction and altitude. By satisfying all these conditions, the plane had a good flight. In Mathematics, a set of points that satisfy one or more conditions is called a locus. Let’s have an example: A circle with a centre point A and radius of 1

## Numbers – Types & Definition

Numbers are words, symbols or figures used in counting and making calculations. A number represents a particular quantity and indicates an order or sequence. It can be a sign number, fraction, surd and decimal. Types of Numbers Integers Integers are whole numbers, sign numbers and zero. Sign numbers are positive or negative numbers. Sign Number

## Number Sequences – Arithmetic, Geometric and Fibonacci

Number Sequences The number sequence is a set of numbers that show a series of a pattern.The term is the number in the sequence. There is a certain rule that a number follows, for example, 4, 8, 12 and this sequence shows that number 4 is added in each term. This is an example of

## Definition of Percent

Percent Percent is some part of something, expressed in numbers. Percent is denoted by the symbol %. Percent is used to show a part of something in the general quantity. To find the percent of something means to find the part of something in general amount. Some kinds of percent are commonly used in the

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