IXL | Subtract decimals using blocks

The blocks show 8.48. Use them to find

8.48

–

3.16

How will you need to regroup to find

8.48

–

3.16

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.

8.48

–

3.16

ref_doc_title.

Learn with an example

question

The blocks show 8.76. Use them to find

8.76

–

6.54

How will you need to regroup to find

8.76

–

6.54

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.

8.76

–

6.54

solution

You can use the blocks to help you find

8.76

–

6.54

The blocks show 8.76.

ones

tenths

hundredths

To subtract 6.54, take away 6 ones, 5 tenths, and 4 hundredths.

You can take away 4 hundredths from 6 hundredths. So, do not regroup 1 tenth as 10

hundredths.

You can take away 5 tenths from 7 tenths. So, do not regroup 1 one as 10

tenths.

Now, you can take away 6 ones, 5 tenths, and 4 hundredths.

8
ones
–
6
ones
=
2
ones
7
tenths
–
5
tenths
=
2
tenths
6
hundredths
–
4
hundredths
=
2
hundredths

ones

tenths

hundredths

There are 2 ones, 2 tenths, and 2 hundredths left. That is the same as 2.22.

8.76

–

6.54

2.22

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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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