Q:
# Why are decimals important?

**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.

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Similarly, using the decimal system is less cumbersome than writing, adding, subtracting or multiplying mixed numbers with fractions. For example, it is easier to write ten and a half as 10.5 than as 10 1/2. Adding decimals like 10.5 and 29.75 is much easier than add 10 1/2 and 29 3/4, where you need to replace the fractions with common denominators before adding them. Likewise, it is easier to compare decimal numbers than fractions.

The decimal system, which uses base 10, is a system used for calculation in the sciences and engineering disciplines that can require more precision. Additionally, people need decimals in everyday life for the most basic of tasks.

Learn more about Fractions & Percentages-
Q:
## What are some basic rules for rounding decimal places?

A: When rounding numbers with decimals, all digits to the right of the rounding digit are dropped. No further action is taken if the digits to the right of th... Full Answer >Filed Under: -
Q:
## What is the way to multiply percentages?

A: The multiplication of percentages is accomplished by converting the percentage to decimals, and multiplying the decimals. To convert a percentage to a deci... Full Answer >Filed Under: -
Q:
## How do you write decimals in standard form?

A: To write decimals in standard form, move the decimal point to the right until it is at the right of the first nonzero digit. Then, multiply the number by 1... Full Answer >Filed Under: -
Q:
## What are some rules about rounding decimals?

A: When rounding decimals, the number value of the last retained decimal is increased by 1 if the number in the next decimal place is 5 or greater. If the nex... Full Answer >Filed Under: