# All About Math, In One Place

## Most Popular

### Multiples and Factors

By Math Original No comments

Multiples and Factors Multiples You can think multiples of a number as the” times table” for that number. For example: the multiplies of 3 are:3 × 1 = 3,  3 × 2 = 6,  3 × 3 = 9 and so on. A multiple of a number is found when you multiply that number by a positive integer. The […]

### Powers and Roots

By Math Original No comments

Powers and Roots An expression that represents repeated multiplication of the same factor is called a power. So, when we want to multiply a number by itself repeatedly we use powers. $displaystyle {{a}^{n}}$ tells  you  to multiply  a  by itself, exactly n-times. The exponent corresponds to the number of times the base is used as […]

### Prime and composite numbers

By Math Original No comments

Prime and Composite numbers Prime numbers are numbers that have exactly two factors: one and the number itself. Composite numbers are numbers that have more than two factors. Finding prime numbers Over 2000 years ago, a Greek mathematician called “Eratosthenes” made a simple tool for sorting out prime numbers. This tool is called the “Sieve of Eratosthenes” […]

### Finding the length of a straight line

By Math Original No comments

Finding the length of a straight line What is a straight line? A straight line is the set of all points between and extending two points. In most geometries, a line is a primitive object that does not have formal properties beyond length, its single dimension. The two properties of a straight line in Euclidian […]

### Box-and-whisker plots

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Box-and-whisker plots A box-and-whicker plot is a diagram that shows the distribution of a set of data at a glance. They are drawn using five summary statistics: the lowest and highest values( the range), the first and third quartiles (The interquartile range) and the median. Drawing box-and-whisker plots All box-and-whisker plots have the same basic […]

### Calculating averages and ranges for grouped continuous data

By Math Original No comments

Calculating averages and ranges for grouped continuous data Some data is discrete and can only take on certain values. For example, if you throw an ordinary die then you can get one of the numbers 1,2,3,4,5 or 6. If you count the number of red cars in a car park then the result can only […]