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Summary/Background

fractionThe top part of a fraction is called the numerator; the bottom part is called the denominator. You need to know how to simplify, add, subtract, multiply and divide fractions, and how to use the "Fractions" button on your PAGE(calculator,calculator).

Software/Applets used on this page

jsMath
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You can get a better display of the maths by downloading special TeX fonts from jsMath. In the meantime, we will do the best we can with the fonts you have, but it may not be pretty and some equations may not be rendered correctly.

Glossary

denominator

the integer on the bottom of a fraction

fraction

A ratio of two numbers or polynomials.

numerator

the integer on the top of a fraction

union

The union of two sets A and B is the set containing all the elements of A and B.

Full Glossary List