## Example Questions

### Example Question #1 : Adding Multi Digit Decimals

Find the sum of 2.4, 55, and 6.21.

Explanation:

To find the sum, you need to add. Line up all numbers vertically. Since one number has a decimal to the tenths place, one has a decimal to the hundredths place, and one has no decimal, be extra careful to line up the digits correctly! To help you, add a zero to the end of 2.4, and add two zeroes to the end of 55 so that all the digits line up correctly.

Now, add down each column, starting on the right side and moving to the left.

The sum is 63.61.

### Example Question #2 : Adding Multi Digit Decimals

Samantha went to the toy store and bought three things:

2 bouncy balls: $0.49 each 1 coloring book:$4.75 each

How much money did Samantha spend at the toy store?

Explanation:

To find the answer, you must add up all three items. Be careful to add $0.49 TWO times because Samantha bought 2 bouncy balls: Samantha spent$5.73 at the toy store.

### Example Question #3 : Adding Multi Digit Decimals

Explanation:

Add the "whole" parts of the numbers:

Add the "decimal" parts of the numbers:

### Example Question #4 : Adding Multi Digit Decimals

If Susie bought a pair of shoes for , a shirt for , and a pair of pants for . How much did she spend in total?

Explanation:

You add all three values and you get .

### Example Question #5 : Adding Multi Digit Decimals

Above is the menu at the concession stand at a school carnival. Ken wants to purchase a hamburger, a medium order of fries, and medium soda for himself, and a hot dog, a small order of fries, and a small soda for his friend Donna. He hands the clerk a $10 bill and a$5 bill. He has some $1 bills in his pocket; how many of them will he need to hand to the clerk along with the other two bills? (No tax is charged, since this is a school event) Possible Answers: One Two None Three Correct answer: Three Explanation: The items Ken purchases are as follows: Hamburger:$4.89

Medium fries: $2.79 Medium soda:$1.69

Hot dog: $4.39 Small fries:$2.29

Small soda: $1.09 The sum of the prices of these items: Subtract from$20:

Rounding this up - Ken needs to give the clerk three more \$1 bills.

### Example Question #6 : Adding Multi Digit Decimals

Solve:

Explanation:

When we add with multi-digit numbers with decimals, we start with the numbers furthest to the right and work our way towards the left.

Add the numbers in the hundredths place:

Your work should look something like this:

Add the numbers in the tenths place:

Your work should look something like this:

*Notice that the decimal moves directly down when we are adding decimal numbers.

Add the numbers in the ones place:

Because this sum is greater than 9, we write the 2 from the ones place and carry the 1 from the tens place over to the left. Your work should look something like this:

Add the numbers in the tens place including the one carried over:

### Example Question #7 : Adding Multi Digit Decimals

Solve:

Explanation:

When we add with multi-digit numbers with decimals, we start with the numbers furthest to the right and work our way towards the left.

Add the numbers in the hundredths place:

Your work should look something like this:

Add the numbers in the tenths place:

Because this sum is greater than 9, we write the 6 from the ones place and carry the 1 from the tens place over to the left. Your work should look something like this:

Your work should look something like this:

*Notice that the decimal moves directly down when we are adding decimal numbers.

Add the numbers in the ones place including the one carried over:

Your work should look something like this:

Add the numbers in the tens place:

### Example Question #5 : Adding Multi Digit Decimals

Solve:

Explanation:

When we add with multi-digit numbers with decimals, we start with the numbers furthest to the right and work our way towards the left.

Add the numbers in the hundredths place:

Because this sum is greater than 9, we write the 2 from the ones place and carry the 1 from the tens place over to the left. Your work should look something like this:

Add the numbers in the tenths place including the one carried over:

Because this sum is greater than 9, we write the 5 from the ones place and carry the 1 from the tens place over to the left. Your work should look something like this:

*Notice that the decimal moves directly down when we are adding decimal numbers.

Add the numbers in the ones place including the one carried over:

Your work should look something like this:

Add the numbers in the tens place:

### Example Question #8 : Adding Multi Digit Decimals

Solve:

Explanation:

When we add with multi-digit numbers with decimals, we start with the numbers furthest to the right and work our way towards the left.

Add the numbers in the hundredths place:

Your work should look something like this:

Add the numbers in the tenths place:

Because this sum is greater than 9, we write the 2 from the ones place and carry the 1 from the tens place over to the left. Your work should look something like this:

Your work should look something like this:

*Notice that the decimal moves directly down when we are adding decimal numbers.

Add the numbers in the ones place including the one carried over:

Because this sum is greater than 9, we write the 6 from the ones place and carry the 1 from the tens place over to the left. Your work should look something like this:

Add the numbers in the tens place including the one carried over:

### Example Question #10 : Adding Multi Digit Decimals

Solve:

Explanation:

When we add with multi-digit numbers with decimals, we start with the numbers furthest to the right and work our way towards the left.

Add the numbers in the hundredths place:

Your work should look something like this:

Add the numbers in the tenths place:

Because this sum is greater than 9, we write the 4 from the ones place and carry the 1 from the tens place over to the left. Your work should look something like this:

Your work should look something like this:

*Notice that the decimal moves directly down when we are adding decimal numbers.

Add the numbers in the ones place including the one carried over:

Your work should look something like this:

Add the numbers in the tens place: