Jump to lessons, tools, blog posts, and key pages.
Simplest form answer
The simplified form of 12/30 is 2/5. The GCF is 6, the decimal is 0.4, and the percent is 40%.
Simplified
2/5
Decimal
0.4
Percent
40%
1. Find the greatest common factor.
The GCF of 12 and 30 is 6.
2. Divide the numerator and denominator by the GCF.
12 ÷ 6 = 2
30 ÷ 6 = 5
3. Write the result.
12/30 simplified is 2/5.
Decimal equivalent
2/5 = 0.4
Percentage equivalent
2/5 = 40%
The filled part represents 2/5 of one whole.
Use the main fraction simplifier for any numerator and denominator.
Open the Fraction Simplifier