Descripción o resumen del libro: Index 1. Natural, integer and decimal numbers 2. Fractions3. Powers and roots 4. Mathematical problems 5. Geometric and arithmetic progressions 6. Algebraic language 7. Equations8. Equational systems 9. Functions and graphs 10. Linear and quadratic functions 11. Geometrical problems and flat surfaces 12. Three- Dimensional geometric shapes 13. Geometric transformations 14. Tables and statistical graphs 15. Statistical parameters