B Set 40 Unknown

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        "operation": "place-value",
        "subject": "arithmetic",
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        "problems": [
            {
                "id": 1,
                "type": "place-value",
                "subType": "standard-form",
                "number": 50,
                "question": "Write the standard form: 5 × 10 = ? (ones, tens, hundreds place)",
                "answer": 50,
                "correctAnswer": "50",
                "difficulty": "easy"
            },
            {
                "id": 2,
                "type": "place-value",
                "subType": "compare",
                "number": 35,
                "question": "Compare using place value: 35 ___ 33 (>, <, or =)",
                "answer": ">",
                "correctAnswer": ">",
                "difficulty": "easy"
            },
            {
                "id": 3,
                "type": "place-value",
                "subType": "expanded-form",
                "number": 15,
                "question": "Write 15 using place value expanded form. What is the expanded form?",
                "answer": "1 × 10 + 5 × 1",
                "correctAnswer": "1 × 10 + 5 × 1",
                "difficulty": "easy"
            },
            {
                "id": 4,
                "type": "place-value",
                "subType": "expanded-form",
                "number": 35,
                "question": "Write 35 using place value expanded form. What is the expanded form?",
                "answer": "3 × 10 + 5 × 1",
                "correctAnswer": "3 × 10 + 5 × 1",
                "difficulty": "easy"
            },
            {
                "id": 5,
                "type": "place-value",
                "subType": "expanded-form",
                "number": 93,
                "question": "Write 93 using place value expanded form. What is the expanded form?",
                "answer": "9 × 10 + 3 × 1",
                "correctAnswer": "9 × 10 + 3 × 1",
                "difficulty": "easy"
            },
            {
                "id": 7,
                "type": "place-value",
                "subType": "identify-digit",
                "number": 72,
                "question": "What is the ones digit in the number 72?",
                "answer": 2,
                "correctAnswer": "2",
                "difficulty": "easy"
            },
            {
                "id": 8,
                "type": "place-value",
                "subType": "standard-form",
                "number": 72,
                "question": "Write the standard form: 7 × 10 + 2 × 1 = ? (ones, tens, hundreds place)",
                "answer": 72,
                "correctAnswer": "72",
                "difficulty": "easy"
            },
            {
                "id": 9,
                "type": "place-value",
                "subType": "identify-digit",
                "number": 53,
                "question": "What is the tens digit in the number 53?",
                "answer": 5,
                "correctAnswer": "5",
                "difficulty": "easy"
            },
            {
                "id": 10,
                "type": "place-value",
                "subType": "identify-digit",
                "number": 90,
                "question": "What is the tens digit in the number 90?",
                "answer": 9,
                "correctAnswer": "9",
                "difficulty": "easy"
            },
            {
                "id": 11,
                "type": "place-value",
                "subType": "expanded-form",
                "number": 28,
                "question": "Write 28 using place value expanded form. What is the expanded form?",
                "answer": "2 × 10 + 8 × 1",
                "correctAnswer": "2 × 10 + 8 × 1",
                "difficulty": "easy"
            },
            {
                "id": 12,
                "type": "place-value",
                "subType": "identify-digit",
                "number": 42,
                "question": "What is the tens digit in the number 42?",
                "answer": 4,
                "correctAnswer": "4",
                "difficulty": "easy"
            },
            {
                "id": 13,
                "type": "place-value",
                "subType": "standard-form",
                "number": 83,
                "question": "Write the standard form: 8 × 10 + 3 × 1 = ? (ones, tens, hundreds place)",
                "answer": 83,
                "correctAnswer": "83",
                "difficulty": "easy"
            },
            {
                "id": 15,
                "type": "place-value",
                "subType": "standard-form",
                "number": 27,
                "question": "Write the standard form: 2 × 10 + 7 × 1 = ? (ones, tens, hundreds place)",
                "answer": 27,
                "correctAnswer": "27",
                "difficulty": "easy"
            },
            {
                "id": 16,
                "type": "place-value",
                "subType": "identify-digit",
                "number": 93,
                "question": "What is the tens digit in the number 93?",
                "answer": 9,
                "correctAnswer": "9",
                "difficulty": "easy"
            },
            {
                "id": 17,
                "type": "place-value",
                "subType": "identify-digit",
                "number": 71,
                "question": "What is the ones digit in the number 71?",
                "answer": 1,
                "correctAnswer": "1",
                "difficulty": "easy"
            },
            {
                "id": 18,
                "type": "place-value",
                "subType": "identify-digit",
                "number": 35,
                "question": "What is the tens digit in the number 35?",
                "answer": 3,
                "correctAnswer": "3",
                "difficulty": "easy"
            },
            {
                "id": 19,
                "type": "place-value",
                "subType": "expanded-form",
                "number": 39,
                "question": "Write 39 using place value expanded form. What is the expanded form?",
                "answer": "3 × 10 + 9 × 1",
                "correctAnswer": "3 × 10 + 9 × 1",
                "difficulty": "easy"
            },
            {
                "id": 20,
                "type": "place-value",
                "subType": "standard-form",
                "number": 82,
                "question": "Write the standard form: 8 × 10 + 2 × 1 = ? (ones, tens, hundreds place)",
                "answer": 82,
                "correctAnswer": "82",
                "difficulty": "easy"
            }
        ],
        "layout": {
            "columns": 2,
            "problemsPerPage": 20
        }
    },
    "outputTargets": {
        "screen": true,
        "print": true,
        "pdf": true,
        "answerKey": true
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    "_archetype": "form-exercise",
    "_generatorId": "arithmetic-generator-v7.2.1"
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