IXL | Use models to add three-digit numbers - regroup tens

The blocks show

486

381

486

381

You could regroup to have fewer than 10 tens and 10 ones. How many hundreds, tens, and ones would you have if you regrouped?

hundreds, tens, and ones

Complete the addition sentence.

486

381

ref_doc_title.

Learn with an example

question

The blocks show

251

182

251

182

You could regroup to have fewer than 10 tens and 10 ones. How many hundreds, tens, and ones would you have if you regrouped?

hundreds, tens, and ones

Complete the addition sentence.

251

182

solution

Use the blocks to find

251

182

First, count the hundreds, tens, and ones blocks.

hundreds

tens

, and

one

hundred

tens

, and

ones

There are 3 hundreds blocks, 13 tens blocks, and 3 ones blocks in all.

Regroup 10 of the tens as 1 hundred.

There are 3 tens left over.

You now have one more hundred. That makes 4 hundreds in all.

So, there are 4 hundreds, 3 tens, and 3 ones after you regroup. This is the same as

433.

251

182

433

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Use models to add three-digit numbers - regroup ones

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