90 as a Decimal

Answer

90 as a decimal is written as 90.0. This is because 90 is a whole number, and when expressed as a decimal, it remains the same, with a zero in the fractional part.

Explanation

To express 90 as a decimal, we simply need to understand that it is already a whole number. Thus, when written in decimal form, it includes a decimal point followed by a zero, indicating there are no fractional parts.

Step 1: Recognize that 90 is a whole number.

Step 2: Write 90 with a decimal point by adding ".0" to it, which does not change its value.

Step 3: The result is 90.0, showing that it is a whole number with no fractional component.

• Whole Number: A number without fractions; an integer. Decimal: A number that includes a decimal point to separate the whole part from the fractional part.

• Decimal Point: A dot (.) used to separate the whole number from the fractional part in decimal notation.

• Fractional Part: The part of a decimal number that comes after the decimal point.

• Non-Terminating Decimal: A decimal that continues indefinitely without repeating.