1.8 as a Fraction

Learn how to convert the decimal number 1.8 to a fraction. We'll show you the answer and walk through the conversion process step by step.

Answer:

1.8 = 1 ⁴/₅ or ⁹/₅

1.8 as a fraction is 9/5 or 1 4/5 (mixed number)

Follow these steps to convert 1.8 to a fraction:

Step 1

Start by writing 1.8 as a fraction with 1 as the denominator:

1.8 = 1.8/1

Step 2

Since there are 1 digit(s) after the decimal point, multiply both numerator and denominator by 10:

(1.8 × 10) / (1 × 10) = 18/10

Step 3

Find the Greatest Common Divisor (GCD) of 18 and 10, which is 2. Divide both numerator and denominator by 2:

(18 ÷ 2) / (10 ÷ 2) = 9/5

Step 4

Since 9/5 is an improper fraction (numerator is larger than denominator), we can convert it to a mixed number:

9 ÷ 5 = 1 remainder 4, so 9/5 = 1 4/5

Final Answer: 1.8 = 1 4/5 (mixed number) or 9/5 (improper fraction)