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Fractions and decimals are two useful types of rational numbers that can be used to represent precise values in a variety of math problems. Understanding the difference between them is essential for developing a strong base in arithmetic.
In order to convert a fraction into a decimal, you must divide the numerator by the denominator. This is called reducing the fraction.
1. Fractions are ratios
A fraction is a number that represents a part of something, usually a whole. Fractions are used in everyday life to calculate prices, make measurements, and follow recipes.
Fractions are also important in mathematics. They are the basic building blocks of maths, and they help distribute numbers more easily.
Fractions are a type of ratio, which is an expression that compares two things. Ratios are more flexible and contain more information than fractions, but they can be harder to use.
2. Fractions can be written as decimals
Fractions are a way to describe the number of equal parts a whole or collection of objects has. The number on the top of a fraction line is called the numerator, and the number on the bottom is called the denominator.
Decimals are numbers that fall between integers. They use a system of tens, so the spaces to the right of a decimal point are tenths, hundredths, and thousandths.
To write a decimal as a fraction, place the number after the decimal in the numerator and place 10, 100, or 1,000 in the denominator. Then, add zeros in the denominator until you have a fraction with a number of decimal places equal to the original number of decimal places.
Unlike fractions, decimals can be tricky to divide when they have unequal denominators. For example, dividing 1/3 doesn’t have a simple answer, because there are more 3s than you can count. But if you’re familiar with the process, it can help.
3. Fractions can be converted to decimals
Fractions can be converted to decimals by dividing the numerator by the denominator. If a fraction is a mixed number, add enough trailing zeros to the numerator to allow continued division. Continue dividing until you get an answer that is either a terminating decimal or a repeating decimal.
Decimals have the advantage of being easier to compare to one another. For example, 0.5 vs. 0.3 is easier to compare than 0.7 and 0.57.
The problem with decimals is that they usually have more digits than fractions do, which means that multiplying a lot of them takes more time than multiplying a fraction.
Teaching students how to convert fractions into decimals is an important skill that they should master. It will help them move between different forms of numbers easily, and it will strengthen their math skills overall.
4. Fractions can be multiplied
Fractions are a way to divide a number into equal parts. Each fraction has a numerator (the top number) and a denominator (the bottom number). These numbers are separated by a line.
There are also fractions that have more than two parts, like -1/2 and 1/-2. These are called negative fractions because they represent the opposite of a positive fraction.
Another kind of fraction is a mixed fraction, which has both a whole number part and a fractional part. These are useful when you need to compare fractions, but they can be hard to work with.
To multiply a fraction, start by multiplying its numerator by its whole number, followed by its denominator. Then, simplify the result and reduce it to its lowest terms if needed. This is a lot easier than you might think!