Time Quarter Hour Grade 3 — Set 13

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        "subject": "clock-math",
        "difficulty": "medium",
        "config": {
            "maxNumber": 1000,
            "clockMode": "quarter-hour",
            "_gradeLevel": "3"
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        "problems": [
            {
                "id": 1,
                "type": "clock-math",
                "subType": "add-time",
                "question": "30 minutes after 6:45 = ?",
                "answer": "7:15",
                "correctAnswer": "7:15",
                "difficulty": "normal"
            },
            {
                "id": 2,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "25 minutes before 6:35 = ?",
                "answer": "6:10",
                "correctAnswer": "6:10",
                "difficulty": "normal"
            },
            {
                "id": 3,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 11:25 to 11:55?",
                "answer": 30,
                "correctAnswer": "30",
                "difficulty": "normal"
            },
            {
                "id": 4,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "25 minutes before 6:10 = ?",
                "answer": "5:45",
                "correctAnswer": "5:45",
                "difficulty": "normal"
            },
            {
                "id": 5,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 1:30 to 3:15?",
                "answer": 105,
                "correctAnswer": "105",
                "difficulty": "normal"
            },
            {
                "id": 6,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 1:25 to 1:45?",
                "answer": 20,
                "correctAnswer": "20",
                "difficulty": "normal"
            },
            {
                "id": 7,
                "type": "clock-math",
                "subType": "read-time",
                "question": "What time is shown on the clock? [hour hand near 5, minute hand at 50 minutes]",
                "answer": "5:50",
                "correctAnswer": "5:50",
                "difficulty": "normal"
            },
            {
                "id": 8,
                "type": "clock-math",
                "subType": "read-time",
                "question": "What time is shown on the clock? [hour hand near 2, minute hand at 35 minutes]",
                "answer": "2:35",
                "correctAnswer": "2:35",
                "difficulty": "normal"
            },
            {
                "id": 9,
                "type": "clock-math",
                "subType": "read-time",
                "question": "What time is shown on the clock? [hour hand near 11, minute hand at 10 minutes]",
                "answer": "11:10",
                "correctAnswer": "11:10",
                "difficulty": "normal"
            },
            {
                "id": 10,
                "type": "clock-math",
                "subType": "add-time",
                "question": "35 minutes after 7:15 = ?",
                "answer": "7:50",
                "correctAnswer": "7:50",
                "difficulty": "normal"
            },
            {
                "id": 11,
                "type": "clock-math",
                "subType": "read-time",
                "question": "What time is shown on the clock? [hour hand near 6, minute hand at 55 minutes]",
                "answer": "6:55",
                "correctAnswer": "6:55",
                "difficulty": "normal"
            },
            {
                "id": 12,
                "type": "clock-math",
                "subType": "add-time",
                "question": "55 minutes after 10:00 = ?",
                "answer": "10:55",
                "correctAnswer": "10:55",
                "difficulty": "normal"
            },
            {
                "id": 13,
                "type": "clock-math",
                "subType": "read-time",
                "question": "What time is shown on the clock? [hour hand near 10, minute hand at 20 minutes]",
                "answer": "10:20",
                "correctAnswer": "10:20",
                "difficulty": "normal"
            },
            {
                "id": 14,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "55 minutes before 11:45 = ?",
                "answer": "10:50",
                "correctAnswer": "10:50",
                "difficulty": "normal"
            },
            {
                "id": 15,
                "type": "clock-math",
                "subType": "add-time",
                "question": "80 minutes after 10:00 = ?",
                "answer": "11:20",
                "correctAnswer": "11:20",
                "difficulty": "normal"
            },
            {
                "id": 16,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 6:50 to 7:40?",
                "answer": 50,
                "correctAnswer": "50",
                "difficulty": "normal"
            },
            {
                "id": 17,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 4:50 to 4:55?",
                "answer": 5,
                "correctAnswer": "5",
                "difficulty": "normal"
            },
            {
                "id": 18,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "15 minutes before 4:20 = ?",
                "answer": "4:05",
                "correctAnswer": "4:05",
                "difficulty": "normal"
            },
            {
                "id": 19,
                "type": "clock-math",
                "subType": "read-time",
                "question": "What time is shown on the clock? [hour hand near 5, minute hand at 15 minutes]",
                "answer": "5:15",
                "correctAnswer": "5:15",
                "difficulty": "normal"
            },
            {
                "id": 20,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "5 minutes before 4:35 = ?",
                "answer": "4:30",
                "correctAnswer": "4:30",
                "difficulty": "normal"
            }
        ],
        "layout": {
            "columns": 2,
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    "_archetype": "form-exercise",
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