- Maths Help
- Algebra
- DecimalsToggle Dropdown
- Place value
- Comparing and ordering decimals
- Rounding to a place
- Significant figures
- Standard form and engineering notation
- Adding decimals
- Subtracting decimals
- Multiplying decimals
- Dividing decimals
- Converting decimals to fractions
- Converting decimals to percents
- Converting between decimals, fractions and percents
- Ordering decimals, fractions and percents

- FractionsToggle Dropdown
- Understanding fractions
- Simplifying (reducing) fractions
- Equivalent fractions
- Comparing fractions
- Ordering fractions
- Mixed numbers and improper fractions
- Adding fractions
- Subtracting fractions
- Adding and subtracting mixed numbers
- Multiplying fractions
- Dividing fractions
- Multiplying and dividing mixed numbers
- Converting fractions to decimals
- Converting fractions to percents
- Converting between fractions, decimals and percents
- Ordering fractions, decimals and percents

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In this module you can learn what a variables and expressions are and how they are used in algebra.

The video above contains an explanation of variables.

The above video from Khan academy explains variables, expressions and equations.

There are no rules that determine what letter is used as a variable.

Variables always represent some value, even if that value is zero.

The number that comes just after "x" is not "y"; it is "x + 1".

- Study the fundamentals of algebraThis site from cimt.plymouth.ac.uk contains text, practice questions and an online quiz for several basic algebra concepts including variables, simplifying expressions and writing formulae.

Use these search terms to find your own resources:

*what is a variable**algebra variablesworking with variables*