ADDITION AND SUBTRACTION

Add or Subtract tens

Add or Subtract tens

Add or Subtract tens

Addition and subtraction

Addition and subtraction

Addition and subtraction

Addition and subtraction

Addition and subtraction

Word problems

Word problems

Word problems

Word problems

Word problems

Word problems

Word problems

Word problems

Word problems

Word problems

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Check the correct answer

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Check the correct answer

Check the correct answer

Check the correct answer

Check the correct answer

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Add or Subtract tens
Add or Subtract tens