Common Core: 5th Grade Math : Subtract Decimals

Study concepts, example questions & explanations for Common Core: 5th Grade Math

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Example Questions

Example Question #1 : Subtract Decimals

Subtract:

Possible Answers:

Correct answer:

Explanation:

We can use base ten blocks to help us solve this problem. Let's review what our base ten blocks are by using a whole number 

Base ten blocks

When we put this together, we add:

To use base ten blocks to add decimal numbers, we need to think of the base ten blocks a little differently. We think of the hundreds block as one whole. The tens block as tenths because you would need ten of these to make one whole. Finally, the ones block as hundredths because you would need a hundred of these to make one whole: 

Base ten blocks decimal

Let's look at this problem:

First, we want to represent the  with four tenths blocks and five hundredths blocks: 

45

Next, we want to take away , which means taking away one of the tenths and one of the hundredths:

34

We can see that we now have three tenths blocks and four hundredths blocks, which means our answer is 

Answer chart 4

Example Question #2 : Subtract Decimals

Subtract the following:

Possible Answers:

Correct answer:

Explanation:

We can use base ten blocks to help us solve this problem. Let's review what our base ten blocks are by using a whole number 

Base ten blocks

When we put this together, we add:

To use base ten blocks to add decimal numbers, we need to think of the base ten blocks a little differently. We think of the hundreds block as one whole. The tens block as tenths because you would need ten of these to make one whole. Finally, the ones block as hundredths because you would need a hundred of these to make one whole: 

Base ten blocks decimal

Let's look at this problem:

First, we want to represent the  with five tenths blocks and six hundredths blocks: 

56

 

Next, we want to take away , which means taking away three of the tenths and five of the hundredths:

21

We can see that we now have two tenths blocks and one hundredths block, which means our answer is 

Answer chart 6

Example Question #1 : Subtract Decimals

Subtract:

Possible Answers:

Correct answer:

Explanation:

Subtracting decimals is just like subtracting regular numbers. But, you must remember your decimal in your answer:

        

Example Question #1 : Subtract Decimals

Subtract:

Possible Answers:

Correct answer:

Explanation:

Subtracting decimals is just like subtracting regular numbers. But, you must remember your decimal in your answer:

        

Example Question #1 : Subtract Decimals

Subtract:

Possible Answers:

Correct answer:

Explanation:

Subtracting decimals is just like subtracting regular numbers. But, you must remember your decimal in your answer:

        

Example Question #31 : Add, Subtract, Multiply, And Divide Decimals To Hundredths: Ccss.Math.Content.5.Nbt.B.7

Subtract:

Possible Answers:

Correct answer:

Explanation:

We can use base ten blocks to help us solve this problem. Let's review what our base ten blocks are by using a whole number 

Base ten blocks

When we put this together, we add:

To use base ten blocks to add decimal numbers, we need to think of the base ten blocks a little differently. We think of the hundreds block as one whole. The tens block as tenths because you would need ten of these to make one whole. Finally, the ones block as hundredths because you would need a hundred of these to make one whole: 

Base ten blocks decimal

Let's look at this problem:

First, we want to represent the  with one tenths block and five hundredths blocks: 

15

Next, we want to take away , which means taking away none of the tenths and two of the hundredths:

13

We can see that we now have one tenths block and three hundredths blocks, which means our answer is 

Answer chart 5

Example Question #32 : Add, Subtract, Multiply, And Divide Decimals To Hundredths: Ccss.Math.Content.5.Nbt.B.7

Possible Answers:

Correct answer:

Explanation:

Subtracting decimals is just like subtracting whole numbers. But, you must remember your decimal in your answer.

 

You start subtracting on the far right which in this case is the hundredths place. You cannot take  from  so we must borrow a tenth from the tenths place. The  becomes a   and we carry that tenth into the hundredths place making the  a . Screen shot 2020 09 11 at 8.58.53 am

 

Next, subtract the tenths place. Screen shot 2020 09 11 at 9.00.06 am

The decimal will be carried down and remain between the tenths place and the ones place. Screen shot 2020 09 11 at 9.00.11 am

The final subtraction portion is the ones place. Screen shot 2020 09 11 at 9.00.27 am

The final answer is 

Example Question #33 : Add, Subtract, Multiply, And Divide Decimals To Hundredths: Ccss.Math.Content.5.Nbt.B.7

Possible Answers:

Correct answer:

Explanation:

Subtracting decimals is just like subtracting whole numbers. But, you must remember your decimal in your answer.

You start subtracting on the far right which in this case is the hundredths place. Screen shot 2020 09 11 at 8.31.19 am

Next, subtract the tenths place Screen shot 2020 09 11 at 8.31.37 am

The decimal will be carried down and remain between the tenths place and the one' place. Screen shot 2020 09 11 at 8.31.48 am

The final subtraction portion is the ones place. Screen shot 2020 09 11 at 8.31.54 am

Example Question #34 : Add, Subtract, Multiply, And Divide Decimals To Hundredths: Ccss.Math.Content.5.Nbt.B.7

Possible Answers:

Correct answer:

Explanation:

Subtracting decimals is just like subtracting whole numbers. But, you must remember your decimal in your answer.

 

You start subtracting on the far right which in this case is the hundredths place. Screen shot 2020 09 11 at 9.09.46 am

Next, subtract the tenths place. Screen shot 2020 09 11 at 9.09.50 am

The decimal will be carried down and remain between the tenths place and the ones place. Screen shot 2020 09 11 at 9.09.58 am

The final subtraction portion is the ones place. Screen shot 2020 09 11 at 9.10.03 am

The final answer is 

Example Question #35 : Add, Subtract, Multiply, And Divide Decimals To Hundredths: Ccss.Math.Content.5.Nbt.B.7

Possible Answers:

Correct answer:

Explanation:

Subtracting decimals is just like subtracting whole numbers. But, you must remember your decimal in your answer.

 

You start subtracting on the far right which in this case is the hundredths place. Screen shot 2020 09 11 at 9.28.55 am

Next, subtract the tenths place. You cannot take  from  so we must borrow a one from the ones place. The  becomes an  and we carry that into the tenths place making the  a Screen shot 2020 09 11 at 9.29.01 am

The decimal will be carried down and remain between the tenths place and the ones place. Screen shot 2020 09 11 at 9.29.07 am

The final subtraction portion is the ones place. Screen shot 2020 09 11 at 9.29.13 am

The final answer is 

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