How do you round to the nearest whole number?
Understand the Problem
The question is asking for the method or rules to round a decimal number to the nearest whole number. This involves understanding whether to round up or down based on the decimal value's proximity to the nearest whole number.
Answer
Compare the decimal part: $ ext{if} ext {decimal part} \\ geq 0.5 \\ ext {round up}; \\ ext {else} \\ ext {round down}.$
Answer for screen readers
To round a number to the nearest whole number, compare the decimal part: if it is 0.5 or greater, round up; if it is less than 0.5, round down.
Steps to Solve
- Identify the decimal part of the number
Identify the digits after the decimal point in the given number.
- Compare the decimal part
Compare the decimal part to 0.5:
- If the decimal part is less than 0.5, round down.
- If the decimal part is 0.5 or greater, round up.
- Apply the rounding rule
- If rounding down: Keep the integer part the same and remove the decimal part.
- If rounding up: Increase the integer part by 1 and remove the decimal part.
To round a number to the nearest whole number, compare the decimal part: if it is 0.5 or greater, round up; if it is less than 0.5, round down.
More Information
Rounding numbers is a common practice in mathematics to simplify figures and make them easier to work with.
Tips
A common mistake is rounding up when the decimal part is exactly 0.5; remember that 0.5 should always round up.
