Question

Write each fraction as a percent. $$\frac{1}{3}$$

Short answer

Question: Convert the fraction $$\frac{1}{3}$$ to its equivalent percentage. Answer: 33.33%

Step-by-step solution

Divide the numerator by the denominator

Divide the numerator (1) by the denominator (3) to get the decimal representation of the fraction: $$\frac{1}{3} = 0.3333$$

Convert the decimal to a percentage

Multiply the decimal result from Step 1 by 100 to find the percentage value: $$0.3333\times 100 = 33.33\%$$

Final answer

The fraction $$\frac{1}{3}$$ is equal to 33.33% when expressed as a percentage.

Key concepts

Decimal Representation of Fractions

When we talk about converting fractions into decimals, we are essentially discussing the process of expressing fractions in a base-10 number system, which is familiar and widely used in daily life. For instance, to convert the fraction \( \frac{1}{3} \) into a decimal, one should divide the numerator (1) by the denominator (3). This division results in the decimal 0.3333, which is the decimal form of the fraction. It is important to notice that some fractions will result in a terminating decimal, where the digits after the decimal point stop after a certain number, while others, like \( \frac{1}{3} \), will have repeating decimals that go on indefinitely.

To help students better visualize this, think of dividing a pie evenly into parts. If you cut it into three equal slices, each slice represents one-third of the pie. In decimal form, however, you would represent this single slice as approximately 0.3333. In essence, the decimal representation allows us to view fractions on a scale from 0 to 1, making it easier to compare and perform operations with them.

Percentages in Mathematics

Percentages are a fundamental concept in mathematics, used to express how one quantity relates to another in terms of hundredths. The term 'percent' translates to 'out of a hundred' and is symbolized by the % sign. For instance, when we convert a fraction like \( \frac{1}{3} \) to a percentage, we multiply its decimal form by 100. This gives us 33.33%, indicating that \( \frac{1}{3} \) is equivalent to 33.33 out of 100, or 33.33 per hundred.

Understanding percentages is crucial in various everyday contexts, such as calculating discounts, interest rates, and data analysis. Remember, when you convert a fraction to a percentage, you're essentially asking 'what part of 100 is this fraction?'. It's like cutting that pie into 100 pieces instead of three and seeing how many pieces you would get if it were divided that way.

Numerical Operations

Numerical operations are the bread and butter of mathematics—they include addition, subtraction, multiplication, and division. When converting fractions to percentages, we employ two primary numerical operations: division and multiplication. Division is first used to find the decimal representation of the fraction, as seen when we divide 1 by 3. Multiplication follows, where we take that decimal and multiply it by 100 to get the percentage.

These operations are not isolated; they interconnect with other areas of math. Therefore, having a strong grasp of numerical operations can significantly improve a student's problem-solving ability across various mathematical topics. When practicing these conversions, it's helpful to work through numerous examples to build confidence and ensure the concepts become second nature.