B Set 63 Unknown

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                "number": 474,
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                "number": 235,
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                "type": "base-ten-blocks",
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                "number": 489,
                "answer": "489",
                "question": "Base Ten Blocks: A number has 4 hundreds, 8 tens, 9 ones. What is the number?",
                "difficulty": "normal"
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