IXL | Subtract decimals using blocks

The blocks show 7.72. Use them to find

7.72

–

2.52

How will you need to regroup to find

7.72

–

2.52

Regroup 1 tenth as 10 hundredths only.

Regroup 1 one as 10 tenths only.

Regroup 1 tenth as 10 hundredths and regroup 1 one as 10 tenths.

No regrouping is needed.

Subtract.

7.72

–

2.52

ref_doc_title.

Learn with an example

question

The blocks show 5.07. Use them to find

5.07

–

2.06

How will you need to regroup to find

5.07

–

2.06

Regroup 1 tenth as 10 hundredths only.

Regroup 1 one as 10 tenths only.

Regroup 1 tenth as 10 hundredths and regroup 1 one as 10 tenths.

No regrouping is needed.

Subtract.

5.07

–

2.06

solution

You can use the blocks to help you find

5.07

–

2.06

The blocks show 5.07.

ones

tenths

hundredths

To subtract 2.06, take away 2 ones and 6 hundredths.

You can take away 6 hundredths from 7 hundredths. So, do not regroup 1 tenth as 10

hundredths.

You are not taking away any tenths. So, do not regroup 1 one as 10

tenths.

Now, you can take away 2 ones and 6 hundredths.

5
ones
–
2
ones
=
3
ones
7
hundredths
–
6
hundredths
=
1
hundredth

ones

tenths

hundredth

There are 3 ones, 0 tenths, and 1 hundredth left. That is the same as 3.01.

5.07

–

2.06

3.01

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Questions
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Time
elapsedTime

hr	min	sec
00	00	06

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Teacher tools

Work it out

Not feeling ready yet? These can help:

Y.1Place value models for decimal numbers

E.3Subtract two multi-digit numbers

Z.2Add decimals using blocks

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