Percentages and indices

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In this unit we shall look at the area of percentages and see how to use them in different exercises. We shall also look at examples of how percentages are used in the world around us such as Value Added Tax (VAT), simple interest and the Retail Price Index (RPI).

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publisher INTEF . 20/01/2026 publisher INTEF 20/01/2026 author Fernando Arias Fernández-Pérez 20/01/2026 publisher Instituto de Tecnologías Educativas (ITE) 20/01/2026 editor Instituto de Tecnologías Educativas (ITE) 20/01/2026 technical validator Mª Ana López Montes 20/01/2026