Question
Warren gave 311 of his buttons to Ken, 111 of his buttons to Billy and 211 of his buttons to Howard. He then had 25 buttons left. How many buttons had he at first?
4 m

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Warren gave 311 of his buttons to Ken, 111 of his buttons to Billy and 211 of his buttons to Howard. He then had 25 buttons left. How many buttons had he at first?