Question
Mr Song ordered a strudel. He gave 411 of the strudel to his cousin and 211 of the strudel to his son. What fraction of the strudel did he have left for himself?
3 m

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Mr Song ordered a strudel. He gave 411 of the strudel to his cousin and 211 of the strudel to his son. What fraction of the strudel did he have left for himself?