B Set 81 Unknown

This page uses a content type that does not have a custom renderer yet. Raw structured data is shown below.

{
    "contentData": {
        "operation": "clock-math",
        "subject": "clock-math",
        "difficulty": "hard",
        "config": {
            "difficulty": "hard",
            "clockMode": "hour",
            "maxNumber": 10
        },
        "problems": [
            {
                "id": 1,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 1:12 to 2:08?",
                "answer": 56,
                "correctAnswer": "56",
                "difficulty": "hard"
            },
            {
                "id": 2,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 7:41 to 8:59?",
                "answer": 78,
                "correctAnswer": "78",
                "difficulty": "hard"
            },
            {
                "id": 3,
                "type": "clock-math",
                "subType": "add-time",
                "question": "63 minutes after 7:16 = ?",
                "answer": "8:19",
                "correctAnswer": "8:19",
                "difficulty": "hard"
            },
            {
                "id": 4,
                "type": "clock-math",
                "subType": "read-time",
                "question": "What time is shown on the clock? [hour hand near 1, minute hand at 38 minutes]",
                "answer": "1:38",
                "correctAnswer": "1:38",
                "difficulty": "hard"
            },
            {
                "id": 5,
                "type": "clock-math",
                "subType": "read-time",
                "question": "What time is shown on the clock? [hour hand near 6, minute hand at 39 minutes]",
                "answer": "6:39",
                "correctAnswer": "6:39",
                "difficulty": "hard"
            },
            {
                "id": 6,
                "type": "clock-math",
                "subType": "read-time",
                "question": "What time is shown on the clock? [hour hand near 4, minute hand at 38 minutes]",
                "answer": "4:38",
                "correctAnswer": "4:38",
                "difficulty": "hard"
            },
            {
                "id": 7,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "58 minutes before 12:01 = ?",
                "answer": "11:03",
                "correctAnswer": "11:03",
                "difficulty": "hard"
            },
            {
                "id": 8,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 9:21 to 9:35?",
                "answer": 14,
                "correctAnswer": "14",
                "difficulty": "hard"
            },
            {
                "id": 9,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 5:05 to 6:47?",
                "answer": 102,
                "correctAnswer": "102",
                "difficulty": "hard"
            },
            {
                "id": 10,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "22 minutes before 3:03 = ?",
                "answer": "2:41",
                "correctAnswer": "2:41",
                "difficulty": "hard"
            },
            {
                "id": 11,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 2:39 to 4:39?",
                "answer": 120,
                "correctAnswer": "120",
                "difficulty": "hard"
            },
            {
                "id": 12,
                "type": "clock-math",
                "subType": "add-time",
                "question": "39 minutes after 2:42 = ?",
                "answer": "3:21",
                "correctAnswer": "3:21",
                "difficulty": "hard"
            },
            {
                "id": 13,
                "type": "clock-math",
                "subType": "read-time",
                "question": "What time is shown on the clock? [hour hand near 1, minute hand at 16 minutes]",
                "answer": "1:16",
                "correctAnswer": "1:16",
                "difficulty": "hard"
            },
            {
                "id": 14,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 5:06 to 6:54?",
                "answer": 108,
                "correctAnswer": "108",
                "difficulty": "hard"
            },
            {
                "id": 15,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 4:39 to 5:37?",
                "answer": 58,
                "correctAnswer": "58",
                "difficulty": "hard"
            },
            {
                "id": 16,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "19 minutes before 4:30 = ?",
                "answer": "4:11",
                "correctAnswer": "4:11",
                "difficulty": "hard"
            },
            {
                "id": 17,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "35 minutes before 11:39 = ?",
                "answer": "11:04",
                "correctAnswer": "11:04",
                "difficulty": "hard"
            },
            {
                "id": 18,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 5:42 to 6:15?",
                "answer": 33,
                "correctAnswer": "33",
                "difficulty": "hard"
            },
            {
                "id": 19,
                "type": "clock-math",
                "subType": "add-time",
                "question": "7 minutes after 3:41 = ?",
                "answer": "3:48",
                "correctAnswer": "3:48",
                "difficulty": "hard"
            },
            {
                "id": 20,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 6:24 to 6:27?",
                "answer": 3,
                "correctAnswer": "3",
                "difficulty": "hard"
            }
        ],
        "layout": {
            "columns": 2,
            "problemsPerPage": 20
        }
    },
    "_archetype": "form-exercise",
    "_generatorId": "arithmetic-generator-v7.2.1"
}