Subtraction Number Range Within 50 — Set 51

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            "maxNumber": 50,
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            "maxSum": 50
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        "problems": [
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                "id": 1,
                "operand1": 49,
                "operand2": 29,
                "operator": "-",
                "question": "49 - 29 = ___",
                "answer": 20
            },
            {
                "id": 2,
                "operand1": 16,
                "operand2": 11,
                "operator": "-",
                "question": "16 - 11 = ___",
                "answer": 5
            },
            {
                "id": 3,
                "operand1": 41,
                "operand2": 31,
                "operator": "-",
                "question": "41 - 31 = ___",
                "answer": 10
            },
            {
                "id": 4,
                "operand1": 39,
                "operand2": 12,
                "operator": "-",
                "question": "39 - 12 = ___",
                "answer": 27
            },
            {
                "id": 5,
                "operand1": 29,
                "operand2": 18,
                "operator": "-",
                "question": "29 - 18 = ___",
                "answer": 11
            },
            {
                "id": 6,
                "operand1": 3,
                "operand2": 2,
                "operator": "-",
                "question": "3 - 2 = ___",
                "answer": 1,
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            {
                "id": 7,
                "operand1": 4,
                "operand2": 2,
                "operator": "-",
                "question": "4 - 2 = ___",
                "answer": 2,
                "visualIntent": {
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                    "items": [
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                    "crossedCount": 2
                }
            },
            {
                "id": 8,
                "operand1": 22,
                "operand2": 20,
                "operator": "-",
                "question": "22 - 20 = ___",
                "answer": 2
            },
            {
                "id": 9,
                "operand1": 9,
                "operand2": 6,
                "operator": "-",
                "question": "9 - 6 = ___",
                "answer": 3,
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            {
                "id": 10,
                "operand1": 12,
                "operand2": 11,
                "operator": "-",
                "question": "12 - 11 = ___",
                "answer": 1
            },
            {
                "id": 11,
                "operand1": 6,
                "operand2": 1,
                "operator": "-",
                "question": "6 - 1 = ___",
                "answer": 5,
                "visualIntent": {
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            {
                "id": 12,
                "operand1": 43,
                "operand2": 2,
                "operator": "-",
                "question": "43 - 2 = ___",
                "answer": 41
            },
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                "id": 13,
                "operand1": 3,
                "operand2": 1,
                "operator": "-",
                "question": "3 - 1 = ___",
                "answer": 2,
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                    "crossedCount": 1
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            {
                "id": 14,
                "operand1": 14,
                "operand2": 12,
                "operator": "-",
                "question": "14 - 12 = ___",
                "answer": 2
            },
            {
                "id": 15,
                "operand1": 12,
                "operand2": 1,
                "operator": "-",
                "question": "12 - 1 = ___",
                "answer": 11
            },
            {
                "id": 16,
                "operand1": 14,
                "operand2": 10,
                "operator": "-",
                "question": "14 - 10 = ___",
                "answer": 4
            },
            {
                "id": 17,
                "operand1": 35,
                "operand2": 20,
                "operator": "-",
                "question": "35 - 20 = ___",
                "answer": 15
            },
            {
                "id": 18,
                "operand1": 33,
                "operand2": 12,
                "operator": "-",
                "question": "33 - 12 = ___",
                "answer": 21
            },
            {
                "id": 19,
                "operand1": 13,
                "operand2": 3,
                "operator": "-",
                "question": "13 - 3 = ___",
                "answer": 10
            },
            {
                "id": 20,
                "operand1": 29,
                "operand2": 21,
                "operator": "-",
                "question": "29 - 21 = ___",
                "answer": 8
            }
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