What is the expanded form of 324?, 300 + 20 + 4, 30 + 20 + 40, 300 + 24 , 3 + 2 + 4, What is the expanded form of 673?, 600 + 700 + 30, 600 + 70 + 3, 6 + 7 + 4, 600 + 74, What is the expanded form of 168?, 160 + 8, 200 + 60 + 8, 100 + 60 + 9, 100 + 60 + 8, 100 + 68.

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