FRACTIONS

When an object is divided into a number of equal parts, then each part is called a fraction. There are different ways of writing a fraction. For example, two fifths of an object can be written as a common fraction ® 2/5 a decimal ® 0.4 a percentage ® 40%        2               numerator says how many parts in the fraction        5               denominator says how many equal parts in the whole object Always remember: denominator can NEVER be 0. Why? Because you cannot divide by 0.

 Equivalent fractions

·         Two fractions are said to be equivalent when simplifying, both of them produces the same fraction written in its simplest terms. ·         Equivalent fractions are fractions with identical values. ·         To create a pair of equivalent fractions, you multiply (or divide, cancelling down) the top (numerator) and bottom (denominator) of a given fraction by the same number. ·         Two fractions are equivalent if the cross-products are the same.

OPERATIONS  WITH FRACTIONS  
Fraction operations

EJERCICIOS

Ordenar fracciones

Problems

Interactivo. Operaciones

Problemas interactivos 1

Problemas interactivos 2

Operaciones combinadas

Problemas con fracciones

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