Fractions and decimals are two mathematical representations of numbers. A fraction consists of a numerator (top number) and a denominator (bottom number), while a decimal is a number written using a decimal point. In this article, we will explore the conversion of the fraction 2/5 to a decimal and discuss its various applications.
To convert a fraction to a decimal, divide the numerator by the denominator. Therefore:
2/5 = 2 ÷ 5 = 0.4
Hence, 2/5 as a decimal is 0.4.
Percentage is a way of expressing a number as a fraction of 100. To convert a decimal to a percentage, multiply the decimal by 100. Therefore:
0.4 × 100 = 40%
Hence, 0.4 as a percentage is 40%.
Many recipes require ingredients to be measured in precise amounts. If a recipe calls for 2/5 cup of flour, you can use a measuring cup to measure 0.4 cup of flour.
Retail stores often offer discounts on their products. If a product is marked down by 2/5, it means that the discount is 40%. To calculate the discounted price, multiply the original price by 0.6 (100% - 40%).
In a survey, 2/5 of the respondents answered "yes" to a certain question. This means that 40% of the respondents answered "yes."
Format | Value |
---|---|
Fraction | 2/5 |
Decimal | 0.4 |
Percentage | 40% |
Understanding the conversion of fractions to decimals is an essential mathematical skill. By mastering this concept, you can confidently handle various real-life situations, such as measuring ingredients, calculating discounts, and analyzing survey results. Remember to practice regularly and refer to the tips provided in this article for a better understanding.
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