B Set 21 Unknown

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

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        "operation": "counting",
        "subject": "arithmetic",
        "difficulty": "medium",
        "config": {
            "maxSum": 100,
            "maxNumber": 100
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        "problems": [
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                "id": 1,
                "type": "counting",
                "subType": "count-by",
                "question": "Count by 3s: 12, 15, 18, 21, __",
                "answer": 24,
                "correctAnswer": "24",
                "difficulty": "normal"
            },
            {
                "id": 2,
                "type": "counting",
                "subType": "what-comes-next",
                "question": "What comes after 70?",
                "answer": 71,
                "correctAnswer": "71",
                "difficulty": "normal"
            },
            {
                "id": 3,
                "type": "counting",
                "subType": "skip-counting",
                "question": "What is the next number in the sequence? 50, 55, 60, __, 70",
                "answer": 65,
                "correctAnswer": "65",
                "difficulty": "normal"
            },
            {
                "id": 4,
                "type": "counting",
                "subType": "count-by",
                "question": "Count by 2s: 10, 12, 14, 16, __",
                "answer": 18,
                "correctAnswer": "18",
                "difficulty": "normal"
            },
            {
                "id": 5,
                "type": "counting",
                "subType": "skip-counting",
                "question": "What is the next number in the sequence? 25, 30, 35, __, 45",
                "answer": 40,
                "correctAnswer": "40",
                "difficulty": "normal"
            },
            {
                "id": 6,
                "type": "counting",
                "subType": "count-objects",
                "question": "Count the flowers: How many are there? (79 flowers)",
                "answer": 79,
                "correctAnswer": "79",
                "difficulty": "normal"
            },
            {
                "id": 7,
                "type": "counting",
                "subType": "count-by",
                "question": "Count by 10s: 50, 60, 70, 80, __",
                "answer": 90,
                "correctAnswer": "90",
                "difficulty": "normal"
            },
            {
                "id": 8,
                "type": "counting",
                "subType": "count-by",
                "question": "Count by 3s: 3, 6, 9, 12, __",
                "answer": 15,
                "correctAnswer": "15",
                "difficulty": "normal"
            },
            {
                "id": 9,
                "type": "counting",
                "subType": "count-objects",
                "question": "Count the flowers: How many are there? (84 flowers)",
                "answer": 84,
                "correctAnswer": "84",
                "difficulty": "normal"
            },
            {
                "id": 10,
                "type": "counting",
                "subType": "count-objects",
                "question": "Count the squares: How many are there? (85 squares)",
                "answer": 85,
                "correctAnswer": "85",
                "difficulty": "normal"
            },
            {
                "id": 11,
                "type": "counting",
                "subType": "skip-counting",
                "question": "What is the next number in the sequence? 10, 20, __, 40, 50",
                "answer": 30,
                "correctAnswer": "30",
                "difficulty": "normal"
            },
            {
                "id": 12,
                "type": "counting",
                "subType": "count-by",
                "question": "Count by 5s: 15, 20, 25, 30, __",
                "answer": 35,
                "correctAnswer": "35",
                "difficulty": "normal"
            },
            {
                "id": 13,
                "type": "counting",
                "subType": "what-comes-next",
                "question": "What comes after 59?",
                "answer": 60,
                "correctAnswer": "60",
                "difficulty": "normal"
            },
            {
                "id": 14,
                "type": "counting",
                "subType": "what-comes-next",
                "question": "What comes after 54?",
                "answer": 55,
                "correctAnswer": "55",
                "difficulty": "normal"
            },
            {
                "id": 15,
                "type": "counting",
                "subType": "what-comes-next",
                "question": "What comes after 69?",
                "answer": 70,
                "correctAnswer": "70",
                "difficulty": "normal"
            },
            {
                "id": 16,
                "type": "counting",
                "subType": "count-objects",
                "question": "Count the squares: How many are there? (30 squares)",
                "answer": 30,
                "correctAnswer": "30",
                "difficulty": "normal"
            },
            {
                "id": 17,
                "type": "counting",
                "subType": "skip-counting",
                "question": "What is the next number in the sequence? 30, __, 50, 60, 70",
                "answer": 40,
                "correctAnswer": "40",
                "difficulty": "normal"
            },
            {
                "id": 18,
                "type": "counting",
                "subType": "count-objects",
                "question": "Count the circles: How many are there? (13 circles)",
                "answer": 13,
                "correctAnswer": "13",
                "difficulty": "normal"
            },
            {
                "id": 19,
                "type": "counting",
                "subType": "count-objects",
                "question": "Count the dots: How many are there? (9 dots)",
                "answer": 9,
                "correctAnswer": "9",
                "difficulty": "normal"
            },
            {
                "id": 20,
                "type": "counting",
                "subType": "skip-counting",
                "question": "What is the next number in the sequence? 45, 50, 55, __, 65",
                "answer": 60,
                "correctAnswer": "60",
                "difficulty": "normal"
            }
        ],
        "layout": {
            "columns": 2,
            "problemsPerPage": 20
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    "_archetype": "form-exercise",
    "_generatorId": "arithmetic-generator-v7.2.1"
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