# Which Coins are Missing?

Content Which Coins are Missing?
Rating

Ø 4.3 / 6 ratings
The authors
Team Digital

## Finding Missing US Coins by Counting Coins

It is important for us to be able to count coins. Counting coins allows us to know the amount of money that we have or the amount of change that we need to get or make. To do this, we need to know the value of US coins. The table below shows the names and values of US coins:

Name Value
Quarter 25 cents
Dime 10 cents
Nickel 5 cents
Penny 1 cent

To make a certain amount of money, we can combine these coins in different ways. However, the best way to combine coins to make a certain amount is to use the least number of coins. For example, to make 46 cents, it is best to use the following combination of a quarter, two dimes, and a penny.

## How to Find Missing Coins

Sometimes we may need to know what coins are missing to make a certain amount. This is helpful if we are making change, or we are going to purchase something.

To find the missing coins, follow these steps: * Step 1: Add up the coins to find the amount that you have. * Step 2: Subtract the amount that you have from the total. * Step 3: Make the amount with the fewest coins.

For example, let us assume that you want to make 46 cents but have the coins shown below in your hand. How can you find out what other coins you should take to make 46 cents?

We could follow these steps to find out.

• Step 1: Add up the coins in your hand to find the amount that you have. Since you have a dime and a quarter, you add 10 cents and 25 cents to get 35 cents. Therefore, you have 35 cents in your hand.
• Step 2: Subtract the amount that you have from the total amount that you want. Since you want to make 46 cents, you now subtract 35 cents from 46 cents to get 11 cents. 46 – 35 = 11
• Step 3: Finally, make 11 cents using the least number of coins. To make 11 cents with the fewest coins, we can use 1 dime and 1 penny.

Therefore, 46 cents can be made by using 1 quarter, 2 dimes and 1 penny.

## Find the Missing Coins – Summary

Let’s repeat what we learned about finding the missing coins today.

When making a certain amount of money using coins, we try to use the least number of coins. If we want to find the missing coins to make a certain amount, we subtract the amount that we have from the total and use a combination of quarters, dimes, nickels and/ or pennies to make the amount that is missing. Remember that the coin names and their values are as follows:

Name Value
Quarter 25 cents
Dime 10 cents
Nickel 5 cents
Penny 1 cent

Be sure to test and expand your knowledge on counting coins with the other videos in this topic as well as our interactive exercises!

## Which Coins are Missing? exercise

Would you like to apply the knowledge you’ve learned? You can review and practice it with the tasks for the video Which Coins are Missing?.
• ### Match each coin with its correct value.

Hints

Remember, the penny has the lowest value and is a different color than most of the others.

Remember, the dollar coin has the highest value, and is not silver or grey.

Solution
• A dollar coin is worth \$1.00
• A half dollar coin is worth 50 cents
• A quarter is worth 25 cents
• A dime is worth 10 cents
• A nickel is worth 5 cents
• A penny is worth 1 cent
• ### Find the missing coin.

Hints

First, add up the values of the coins Freddie has.

Second, subtract the value of the coins Freddie has from 42 cents.

How many cents does Freddie still need to make 42 cents? What coin can he use?

Solution
• First add the value of the coins Freddie has, which is a quarter (25 cents), a dime (10 cents), and two pennies (2 cents). That is 37 cents.
• Next, subtract 42 - 37 = 5 cents.
• The missing coin Freddie needs is a nickel to make 42 cents change.
• ### Help Freddie make change.

Hints

This is the value of each coin.

• What is the value of 1 quarter and 1 dime?
• What other coins will you need?

After Freddie takes 1 quarter and 1 dime, subtract their value from 50 cents. This is how much more he needs.

Solution
• First, add the values of the coins given. The quarter is worth 25 cents and the dime is worth 10 cents.
• Then, subtract that value from 50 cents. (50-35=?)
• You get 15 cents. Which coins make 15 cents? One dime and one nickel.
• ### What coin is missing?

Hints

These are the values of each coin.

• How much is two quarters worth?
• What other coins will you need?

Once you find the value of two quarters, subtract that from 87 cents to figure out what else you will need.

It helps to start counting coins with the highest value.

Solution

Freddie starts with two quarters, so this is 25 + 25 = 50 cents.

Subtract 50 cents from 87 cents to figure out how much more Freddie needs: 87 - 50 = 37 cents.

You need one quarter, one dime, and two pennies to add together to make 37 cents: 25 + 10 + 1 + 1 = 37.

• ### What coin is missing?

Hints

First, add the value of the quarter and two pennies.

Subtract that value from 52 cents to find number of cents left.

What coin is the same as the value you found?

Solution

First, add the values of the coins given. The quarter is worth 25 cents and the two pennies is worth 2 cents.

Then, subtract that value from 52 cents: 52 - 27 = 25

You get 25 cents, so the missing coin is a quarter.

• ### Find pairs of coins that add up to 75 cents.

Hints

Count each set of coins.

Figure out how much is left to make 75 cents. Find the number of coins that shows that value.

Solution

These sets of coins make 75 cents:

• 1 quarter, 1 dime, and 1 nickel + 3 dimes and 1 nickel
• 2 quarters, 1 dime, and 1 nickel + 1 quarter and 1 dime
• 1 dime and 1 nickel + 2 quarters and 1 nickel
• 1 quarter + 2 quarters