0.25 as a fraction is 1/4.
The conversion
0.25 = 25/100 = 1/4 in lowest terms (divide top and bottom by 25).
How to convert any decimal
- Write digits over 10, 100 or 1000.
- Simplify.
Related
- 0.5 = 1/2.
- 0.75 = 3/4.
- 0.25 as a percent: 25%.
Step by step
0.25 equals 25 hundredths, so write 25/100. Divide the top and bottom by 25 (the greatest common factor), which gives 1/4.
Check by division
1 divided by 4 equals 0.25. This confirms the answer.
Percent
0.25 equals 25%. A quarter is 25 percent of a whole.
Money
A US quarter is worth 25 cents, which is 0.25 of a dollar, and one fourth of a dollar. Four quarters make one dollar.
Time
A quarter of an hour is 15 minutes, which is 0.25 hours. A quarter of a year is 3 months, called a fiscal quarter in business.
Place value
In 0.25, the 2 is in the tenths place (2/10) and the 5 is in the hundredths place (5/100). Adding them: 20/100 + 5/100 = 25/100.
Related decimals and fractions
- 0.5 = 1/2
- 0.75 = 3/4
- 0.125 = 1/8
- 0.2 = 1/5
- 0.4 = 2/5
- 0.05 = 1/20
Recipes
A quarter cup is 4 tablespoons, or 12 teaspoons.
Measurement
A quarter inch is 0.25 inch, or about 6.35 millimeters.
Calculators
For any decimal, count the digits after the decimal point to choose the power of ten as the denominator, then simplify.
Conversion steps and checks
To write 0.25 as a fraction, read it as 25 hundredths, which is 25/100. Divide the numerator and denominator by their greatest common factor, 25, to get 1/4. As a check, divide 1 by 4, which gives 0.25. In percent form, 0.25 is 25 percent, found by multiplying by 100. In place value terms, 0.25 is 2 tenths plus 5 hundredths, which is 20/100 plus 5/100, or 25/100.
Everyday uses of one quarter
A quarter of a dollar is 25 cents. A quarter of an hour is 15 minutes, and a quarter of a year is three months. In recipes, 1/4 cup equals 4 tablespoons or about 59 milliliters, and 1/4 teaspoon is a common spice measure. On a ruler, 1/4 inch is about 6.35 millimeters. A quarter turn is 90 degrees, one quarter of a full 360 degree circle. A quarter of 80 is 20, found by dividing by 4, and 25 percent off a 60 dollar item saves 15 dollars.
Related decimals and fractions
Related equivalents are 0.5 as 1/2, 0.75 as 3/4, 0.125 as 1/8, 0.2 as 1/5, 0.1 as 1/10 and 0.05 as 1/20. To compare fractions, convert them to decimals: 1/4 is smaller than 1/3, which is 0.333 repeating. Calculators can convert a fraction to a decimal by dividing the numerator by the denominator. Learning these pairs speeds mental math, shopping calculations and test performance.
Based on data from math education references and the National Council of Teachers of Mathematics
