## What you’ll learn to do: Write and identify characteristics of decimals

Gasoline prices change all the time. They might go down for a period of time, but then they usually rise again. One thing that stays the same is that the price is not usually a whole number. Instead, it is shown using a decimal point to describe the cost in dollars and cents. We use decimal numbers all the time, especially when dealing with money. In this section, we’ll explore decimal numbers and how to perform operations using them.

Before you get started, take this readiness quiz.

### readiness quiz

1)

Name the number [latex]4,926,015[/latex] in words.

If you missed this problem, review the following example.

Name the number [latex]8,165,432,098,710[/latex] in words.

2)

Round [latex]748[/latex] to the nearest ten.

If you missed this problem, review this video.

3)

If you missed this problem, review the video below.

### Candela Citations

- Gas station prices on a sign .
**Authored by**: Mark Turnauckas.**Located at**: https://www.flickr.com/photos/marktee/5648936885/.**License**:*CC BY: Attribution* - Ex: Rounding to the Various Place Values - Number Line / Formal Rules ..
**Authored by**: James Sousa (Mathispower4u.com).**Located at**: https://youtu.be/tpFCYyTi1hc.**License**:*CC BY: Attribution* - Ex: Identify a Fraction on a Number Line.
**Authored by**: James Sousa (Mathispower4u.com) .**Located at**: https://youtu.be/EIdmdTRQWTE.**License**:*CC BY: Attribution* - Question ID: 146007.
**Authored by**: Lumen Learning.**License**:*CC BY: Attribution*.**License Terms**: IMathAS Community License CC-BY + GPL

- Prealgebra.
**Provided by**: OpenStax.**License**:*CC BY: Attribution*.**License Terms**: Download for free at http://cnx.org/contents/caa57dab-41c7-455e-bd6f-f443cda5519c@9.757