4.5 as a Fraction
4.5 = 9/2
4.5 as a fraction in simplest form is 9/2, or 4 1/2 as a mixed number.
Step by step
- 4.5 has 1 decimal place, so write it over 10: 45/10.
- Find the greatest common divisor of 45 and 10: 5.
- Divide the top and bottom by 5: 45 ÷ 5 = 9, 10 ÷ 5 = 2.
- So 4.5 = 9/2.
Details
- Fraction
- 9/2
- Mixed number
- 4 1/2
- Percent
- 450%
- Nearest 1/16 (tape measure)
- 4 1/2
- Reciprocal
- 2/9 ≈ 0.2222
How it works
To turn a decimal into a fraction, count the digits after the decimal point, write the digits over 10, 100, 1,000 and so on, then simplify by dividing the numerator and denominator by their greatest common divisor. A decimal that ends (terminates) always converts to an exact fraction; a decimal that repeats forever, such as 0.333…, equals a fraction like 1/3.
Nearby values
Related conversions
Frequently asked questions
What is 4.5 as a fraction?
4.5 is 9/2 in simplest form.
How do you convert 4.5 to a fraction?
Write 4.5 as 45/10, then divide the top and bottom by 5 to get 9/2.
What is 4.5 as a percentage?
4.5 × 100 = 450%.
What is 4.5 as a mixed number?
4 1/2.