IXL | Use expanded form to add three-digit numbers: with regrouping | 3rd grade math

or

Find

591

+

278

using expanded form. Here are both numbers in expanded form.

591

=

500

+

90

+

1

278

=

200

+

70

+

8

Add the hundreds, the tens, and the ones.

591

+

278

=

700

+

+

Now find the sum.

591

+

278

=

ref_doc_title.

or

$Confetti$

Excellent!

Now entering the Challenge Zone—are you ready?

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Work it out

Not feeling ready yet? These can help:

Use models to add three-digit numbers: with regrouping

M.11Use place value to add two-digit numbers - with regrouping

L.11Convert to/from a number - up to hundreds