👉 Round math, also known as truncation or ceiling function, is a method of approximating real numbers by rounding them to the nearest integer, effectively discarding the fractional part. For example, the expression 3.14 rounded to the nearest whole number is 3, while 3.7 rounded to the nearest whole number is 4. This technique simplifies calculations and provides a quick, intuitive way to estimate values without the need for precise decimal arithmetic.