Number Revision Notes

Matrices are sets of numbers which are put inside brackets in a tabular form. A matrix contains information which you can manipulate. To be able to work with matrices you have to know it's order. Thi click here for full revision note

Numbers can contain a certain amount of error. Accuracy measures the amount of error or uses the known amount of error to find maximum or minimum possible values. You can work out the percentage err click here for full revision note

Standard form is used to represent either very large or very small numbers. Calculators normally have a function to use standard form. However, you must understand how it works on your calculator to click here for full revision note

Percentages are used all the time. They are used just like fractions. Just like fractions, they are used to find part of a value which may be an increase or decrease of the original value. A percent click here for full revision note

Ratios compare two or more quantities which are in the same units. They are written with a colon ( : ) between each values. Ratios can be treated just like fractions and can be simplied. Finding Rat click here for full revision note

Decimals are the part of the number which come after the decimal point. This part of a number shows a part of a whole or 1. You must be comfortable using them as they are used all the time. Examples: click here for full revision note

Fractions show a number in relation to how many parts there are. They are mostly used to show a number smaller than 1. However, whole numbers can be expressed as fractions as well. You can easily use click here for full revision note

Without numbers, mathematics can not exist. There are a variety of numbers which you are required to know about. Real NumbersThese are rational and irrational numbers. Rational NumbersThese will alw click here for full revision note