# Fractions & Percentages

Q:

## How do I calculate the percentage of something?

A:

To calculate the percentage represented by a ratio, divide the numerator by the denominator, and multiply by 100. For example, given the ratio 14 out of 50, the corresponding percentage is found by dividing 14 by 50, which is 0.28, then multiplying 0.28 by 100 to get 28 percent.

Filed Under:
• #### Q:How do you work out the percentage of something?

A: To calculate percentage, divide the number that is to be expressed as a percentage by the total or whole. The resulting number is then multiplied by 100 to obtain the percentage.
Filed Under:
• #### Q:What is the line in a fraction called?

A: The line that separates the top and bottom numbers of a fraction is called a vinculum. Fractions are also commonly written out using a forward slash in place of a vinculum for convenience on computers.
Filed Under:
• #### Q:How do you simplify improper fractions?

A: Improper fractions are those in which the numerator (top number) is larger than the denominator (bottom number). According to Math is Fun, improper fractions are better for use in mathematical formulae, but mixed fractions are better for understanding and spoken language. When dealing with formulae or math operations, wait until you have made all the other manipulations before converting a fraction to a mixed number for your final answer.
Filed Under:
• #### Q:What is a divisor in math?

A: In math, the divisor refers to the number used to divide by in a division problem. For example, to divide 20 by five to get four, the divisor is five.
Filed Under:
• #### Q:What are basic operations with fractions?

A: Basic operations with fractions involve addition, subtraction, multiplication and division. Addition and subtraction of fractions require a common denominator before making the calculations. When multiplying fractions, the numerators and denominators are multiplied separately to get the answer and when dividing fractions, the reciprocal of the divisor fraction is used, and the fractions are then multiplied.
Filed Under:
• #### Q:How do you add a percentage to a number?

A: To add a percentage to a number, change the percentage to a decimal value, and add one to the value. Multiply the number by the result.
Filed Under:
• #### Q:How do I calculate the percentage of something?

A: To calculate the percentage represented by a ratio, divide the numerator by the denominator, and multiply by 100. For example, given the ratio 14 out of 50, the corresponding percentage is found by dividing 14 by 50, which is 0.28, then multiplying 0.28 by 100 to get 28 percent.
Filed Under:
• #### Q:How much is half a dozen?

A: Half of a dozen is a group of six items of any type. A dozen is a group of twelve items of any type.
Filed Under:
• #### Q:How do you find the sum or difference of fractions?

A: To find the sum or difference of fractions, first find the lowest common denominator (LCD) of each fractions. Once you find the LCD, add or subtract the numerators to discover your answer.
Filed Under:
• #### Q:Why are decimals important?

A: Decimals are important because people use them everyday in different situations, such as counting money, looking at price tags, reading an odometer and reviewing Olympic scores. The decimal system is a way to express large and small numbers by utilizing the decimal point.
Filed Under:
• #### Q:What is 5/8 as a decimal?

A: The fraction five-eighths (5/8) is the decimal 0.625. This answer is found by either using a calculator or dividing five by eight through long division.
Filed Under:
• #### Q:Who invented percentages?

A: No one person invented percentages. The concept developed throughout history. In Ancient Rome mathematical computation were expressed in fractions of 100. This concept later evolved into percentages.
Filed Under:
• #### Q:How do I calculate percentages?

A: Calculating percentages is a key concept in mathematics. Percentage calculations are important in all forms of mathematics including algebra, geometry and calculus. They're also utilized in many sciences such as chemistry, physics and biology.
Filed Under:
• #### Q:How are decimals used in everyday life?

A: Decimals are most often used when referring to money. If someone has \$3.42, for example, he has three whole dollars and 42/100 of a dollar. Most people find it easier to compare two decimals than two fractions.
Filed Under:
• #### Q:What is 20 percent as a fraction?

A: 20 percent can be written as the fraction 1/5. It can also be written as the decimal 0.2. Percentages, fractions and decimals are different ways of expressing the same number value.
Filed Under:
• #### Q:What are some examples of ratio word problems?

A: An example of a ratio word problem is: "In a bag of candy, there is a ratio of red to green candies of 3:4. If the bag contains 120 pieces of candy, how many red candies are there?" Another example of a ratio word problem is: "A recipe calls for 5 cups of flour for every 2 cups of sugar. To make the recipe with 8 cups of flour, how much sugar should be used?"
Filed Under:
• #### Q:What do you call the answer to a division problem?

A: The answer to a division problem is called the quotient. The dividend is the number that is being divided, and the divisor is the number that divides the dividend.
Filed Under:
• #### Q:How do you multiply polynomial fractions?

A: To multiply polynomial fractions, also called rational expressions, break down the given problem into individual polynomials, and factor them. Once the polynomials are factored, cancel any like factors, and simplify the remainder. Do not make the mistake of canceling similar terms between the fractions.
Filed Under:
• #### Q:How do you calculate the break-even point in units?

A: The break-even point in units is fixed costs divided by the difference between the sale price per unit and the variable cost per unit. Figuring out the break-even point is critical for business owners to come up with short-term and long-term financial plans. It is only possible to achieve a break-even point if the variable cost per unit is less than the price per unit.
Filed Under:
• #### Q:What are some ways to teach students place value?

A: Place value cards, place value people and dry-erase charts are some good activities to teach place value to students in third to fifth grade. These techniques are easily adapted to accommodate groups of various sizes and skill levels, and they require minimal materials and preparation.
Filed Under:
• #### Q:How do you teach children decimal numbers?

A: One of the simplest ways to teach children the concept of decimals is to work with money, which is based on the decimal system. The dollar should represent the whole number, whereas different coins represent parts of the whole: a quarter is 0.25, a dime is 0.1, a nickel is 0.05, and a penny is 0.01. This illustrates the basic idea of decimal numbers as parts of a whole. It's also important to teach children how to work with decimals.
Filed Under: