IXL | Add a multiple of ten and a two-digit number | 1st grade math

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Add.

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20

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Excellent!

Now entering the Challenge Zone—are you ready?

Questions
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SmartScore
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IXL's SmartScore is a dynamic measure of progress towards mastery, rather than a percentage grade. It tracks your skill level as you tackle progressively more difficult questions. Consistently answer questions correctly to reach excellence (90), or conquer the Challenge Zone to achieve mastery (100)! Learn more

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Work it out

Not feeling ready yet? These can help:

DD.3Use models to add a multiple of ten and a two-digit number

DD.2Add a multiple of ten and a one-digit number