A comprehensive guide to decimal numbers and fractions, focusing on cómo escribir fracciones y decimales en cifras, redondeo de números decimales exactos e inexactos, and explicación de decimales periódicos y no periódicos.
- Decimal numbers can be classified into exact decimals (like 0.5, 2.5) and inexact decimals
- Rational numbers include periodic decimals (pure and mixed) and can be written as fractions
- Between any two decimal numbers, there are infinite other numbers
- Rounding rules apply differently to exact and inexact decimals
- Decimal operations include addition, subtraction, multiplication, and division