1.8 as a Fraction
1.8 = 9/5
1.8 as a fraction in simplest form is 9/5, or 1 4/5 as a mixed number.
Step by step
- 1.8 has 1 decimal place, so write it over 10: 18/10.
- Find the greatest common divisor of 18 and 10: 2.
- Divide the top and bottom by 2: 18 ÷ 2 = 9, 10 ÷ 2 = 5.
- So 1.8 = 9/5.
Details
- Fraction
- 9/5
- Mixed number
- 1 4/5
- Percent
- 180%
- Nearest 1/16 (tape measure)
- 1 13/16
- Reciprocal
- 5/9 ≈ 0.5556
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 1.8 as a fraction?
1.8 is 9/5 in simplest form.
How do you convert 1.8 to a fraction?
Write 1.8 as 18/10, then divide the top and bottom by 2 to get 9/5.
What is 1.8 as a percentage?
1.8 × 100 = 180%.
What is 1.8 as a mixed number?
1 4/5.