B Set 39 Unknown

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                "number": 460,
                "question": "Write the standard form: 4 × 100 + 6 × 10 = ? (ones, tens, hundreds place)",
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                "correctAnswer": "460",
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                "id": 2,
                "type": "place-value",
                "subType": "identify-digit",
                "number": 581,
                "question": "What is the tens digit in the number 581?",
                "answer": 8,
                "correctAnswer": "8",
                "difficulty": "normal"
            },
            {
                "id": 3,
                "type": "place-value",
                "subType": "compare",
                "number": 153,
                "question": "Compare using place value: 153 ___ 898 (>, <, or =)",
                "answer": "<",
                "correctAnswer": "<",
                "difficulty": "normal"
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            {
                "id": 4,
                "type": "place-value",
                "subType": "identify-digit",
                "number": 267,
                "question": "What is the hundreds digit in the number 267?",
                "answer": 2,
                "correctAnswer": "2",
                "difficulty": "normal"
            },
            {
                "id": 5,
                "type": "place-value",
                "subType": "expanded-form",
                "number": 744,
                "question": "Write 744 using place value expanded form. What is the expanded form?",
                "answer": "7 × 100 + 4 × 10 + 4 × 1",
                "correctAnswer": "7 × 100 + 4 × 10 + 4 × 1",
                "difficulty": "normal"
            },
            {
                "id": 6,
                "type": "place-value",
                "subType": "identify-digit",
                "number": 365,
                "question": "What is the ones digit in the number 365?",
                "answer": 5,
                "correctAnswer": "5",
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                "id": 7,
                "type": "place-value",
                "subType": "standard-form",
                "number": 931,
                "question": "Write the standard form: 9 × 100 + 3 × 10 + 1 × 1 = ? (ones, tens, hundreds place)",
                "answer": 931,
                "correctAnswer": "931",
                "difficulty": "normal"
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                "id": 8,
                "type": "place-value",
                "subType": "identify-digit",
                "number": 445,
                "question": "What is the hundreds digit in the number 445?",
                "answer": 4,
                "correctAnswer": "4",
                "difficulty": "normal"
            },
            {
                "id": 9,
                "type": "place-value",
                "subType": "identify-digit",
                "number": 988,
                "question": "What is the ones digit in the number 988?",
                "answer": 8,
                "correctAnswer": "8",
                "difficulty": "normal"
            },
            {
                "id": 10,
                "type": "place-value",
                "subType": "compare",
                "number": 915,
                "question": "Compare using place value: 915 ___ 248 (>, <, or =)",
                "answer": ">",
                "correctAnswer": ">",
                "difficulty": "normal"
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            {
                "id": 11,
                "type": "place-value",
                "subType": "identify-digit",
                "number": 908,
                "question": "What is the ones digit in the number 908?",
                "answer": 8,
                "correctAnswer": "8",
                "difficulty": "normal"
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            {
                "id": 12,
                "type": "place-value",
                "subType": "compare",
                "number": 520,
                "question": "Compare using place value: 520 ___ 663 (>, <, or =)",
                "answer": "<",
                "correctAnswer": "<",
                "difficulty": "normal"
            },
            {
                "id": 13,
                "type": "place-value",
                "subType": "standard-form",
                "number": 412,
                "question": "Write the standard form: 4 × 100 + 1 × 10 + 2 × 1 = ? (ones, tens, hundreds place)",
                "answer": 412,
                "correctAnswer": "412",
                "difficulty": "normal"
            },
            {
                "id": 14,
                "type": "place-value",
                "subType": "identify-digit",
                "number": 943,
                "question": "What is the tens digit in the number 943?",
                "answer": 4,
                "correctAnswer": "4",
                "difficulty": "normal"
            },
            {
                "id": 15,
                "type": "place-value",
                "subType": "compare",
                "number": 185,
                "question": "Compare using place value: 185 ___ 389 (>, <, or =)",
                "answer": "<",
                "correctAnswer": "<",
                "difficulty": "normal"
            },
            {
                "id": 16,
                "type": "place-value",
                "subType": "identify-digit",
                "number": 812,
                "question": "What is the hundreds digit in the number 812?",
                "answer": 8,
                "correctAnswer": "8",
                "difficulty": "normal"
            },
            {
                "id": 17,
                "type": "place-value",
                "subType": "compare",
                "number": 475,
                "question": "Compare using place value: 475 ___ 621 (>, <, or =)",
                "answer": "<",
                "correctAnswer": "<",
                "difficulty": "normal"
            },
            {
                "id": 18,
                "type": "place-value",
                "subType": "expanded-form",
                "number": 468,
                "question": "Write 468 using place value expanded form. What is the expanded form?",
                "answer": "4 × 100 + 6 × 10 + 8 × 1",
                "correctAnswer": "4 × 100 + 6 × 10 + 8 × 1",
                "difficulty": "normal"
            },
            {
                "id": 19,
                "type": "place-value",
                "subType": "compare",
                "number": 474,
                "question": "Compare using place value: 474 ___ 856 (>, <, or =)",
                "answer": "<",
                "correctAnswer": "<",
                "difficulty": "normal"
            },
            {
                "id": 20,
                "type": "place-value",
                "subType": "identify-digit",
                "number": 371,
                "question": "What is the tens digit in the number 371?",
                "answer": 7,
                "correctAnswer": "7",
                "difficulty": "normal"
            }
        ],
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            "columns": 2,
            "problemsPerPage": 20
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        "answerKey": true
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    "_archetype": "form-exercise",
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