Question
Mary had some flour in a container. She used 412 kg of the flour in the morning. She added 2 kg of flour into the same container in the afternoon. There was 556 kg of flour in the container in the end. How much flour did Mary have at first? Express your answer in its simplest form.
4 m

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Mary had some flour in a container. She used 412 kg of the flour in the morning. She added 2 kg of flour into the same container in the afternoon. There was 556 kg of flour in the container in the end. How much flour did Mary have at first? Express your answer in its simplest form.