Home » Math Vocabulary » Dollar – Definition with Examples

- What Is a Dollar?
- History and Origin of the Dollar
- Solved Examples
- Practice Problems
- Frequently Asked Questions

## What Is a Dollar?

A dollar is a unit of money used in several countries like the US, Australia, Canada, and many more. The currency of the US is the United States Dollar (USD). Its symbol is $.

#### Begin here

Counting Money

Add and Find the Amount of Money in Given Word Problems Game

Add and Subtract Money

Add Money Game

Operations With Money

Add the Given Amounts of Money Game

Count Money with Coins

Arrange Coins and Count Money Game

Counting Money

Calculate the Difference Between Amounts of Money Game

Count Money with Coins

Count Money with Coins of a Type Game

Count Money with Coins

Count Money with Different Coins Game

Penny, Nickel, and Dime

Count the Total Money Game

Counting Money

Count the Total Money in a GIven Scenario Game

Quarters and Half Dollar

Count Total Money using Different Types of Coins Game

## History and Origin of the Dollar

The word dollar comes from silver coins minted in 1518 in Bohemia. After passing through parts of Europe, and later, Spanish colonies around America, it finally arrived in the US. It was adopted as the official currency of the US in the 18th century, where it has been used ever since.

**Countries Using Dollar as their Currency**

- The United States and its territories
- Australia
- New Zealand
- Hong Kong
- Singapore
- Canada
- Jamaica and many more countries.

**How to Write an Amount in Dollars Using Symbols**

To write an amount in dollars, first write the country symbol (US) followed by the dollar sign ($ \$$) and then the dollar figure. For example, US$\$$ 25.99.

**Money Bills of the US**

American bills or paper currency comes in seven denominations: $\$$1, $\$$2, $\$$5, $\$$10, $\$$20, $\$$50, and $\$$100.

**Some Dollar-Related Conversions**

- 1 dollar = 100 cents, so 1 cent is equal to 0.01 dollars.
- 1 nickel = 5 cents, so 1 nickel is equal to 0.05 dollars.
- 1 dime = 10 cents, so 1 dime is equal to 0.1 dollars.
- 1 quarter = 25 cents, so 1 quarter is equal to 0.25 dollars.

#### Related Worksheets

## Solved Examples

**Q1.** Marilyn has 90 cents. She wants them exchanged for dimes. How many dimes will she get back?

Solution:

We know that 10 cents = 1 dime

So, 90 cents = 9 dimes

**Q2.** Sam donated 500 cents and Beth donated $\$$7. In total, how many dollars did they donate?

**Solution:**

We know that 100 cents = 1 dollar.

So, 500 cents = 5 dollars

This means Sam donated $\$5$. Also, we know that Beth donated $\$7$.

So, together they donated $\$$12 (= $\$5$ + $\$$7).

**Q3.** How many dimes make $\$$350?

**Solution:**

100 cents equals 1 dollar and 10 cents equals 1 dime.

So, 10 dimes make 1 dollar.

To make $\$$350 we will need 350 × 10 dimes. That is, 3500 dimes make $350.

**Practice Problems**

**F**requently Asked Questions

**In which year were first dollar bills issued in the US?**

The first United States bills were published as demand notes to fund the Civil War of 1861. The notes were called greenbacks because of their green color.

**In how many denominations are the US bills issued?**

The US bills are available in seven denominations: $\$$1, $\$$2, $\$$5, $\$$10, $\$$20, $\$$50, and $\$$100.

**Who controls the money supply in the United States?**

The Federal Reserve System or the Fed.

**What is the cost of making one US money bill?**

The cost of printing US bills as in 2021 ranges between $\$$6 and $\$$14. The cost of printing varies with denomination.

**How many cents make 1 dollar?**

100 cents make 1 dollar.