Identify Number Parts: Identify the integer and decimal part of the decimal number 8.4.Decimal number: 8.4Integer part: 8Decimal part: 0.4
Determine Rounding Direction: Determine if the decimal part is less than or equal to0.5 to decide whether to round down or if it is greater than 0.5 to round up.Since the decimal part 0.4 is less than 0.5, we round down.
Round to Nearest Whole Number: Round 8.4 to the nearest whole number.The number 8.4 is rounded down to the nearest whole number 8.