IXL | Break apart 3-digit numbers to divide

Use the model to find

128

First, find the missing side lengths.

Then, find the quotient.

128

ref_doc_title.

Learn with an example

question

Use the model to find

816

First, find the missing side lengths.

800

Then, find the quotient.

816

solution

The model shows a big rectangle made up of two smaller rectangles.

800

Start with the first rectangle. One side length is 8, and you need to find the other side length. You can multiply the side lengths to get the area, which is 800.

800

Divide to find the missing number.

800

100

So, the missing side length of the first rectangle is

100.

100

800

Now, look at the second rectangle. One side length is 8, and you need to find the other side length. Again, you can multiply the side lengths to get the area, which is 16.

Divide to find the missing number.

So, the missing side length of the second rectangle is

100

800

Finally, redraw the model as one big rectangle. Its area is 800 + 16 = 816. One side length is 8, and the other is 100 + 2 = 102.

102

816

The model shows

102

816

It also shows

816

102

Looking for more? Try these:

Lesson: Area model division

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Teacher tools

Work it out

Not feeling ready yet? These can help:

K.6Divide 2-digit numbers by 1-digit numbers using area models

Multiply 1-digit numbers by 3-digit numbers using area models II

Lesson: Area model division

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