Subtraction Number Range Within 30 — Set 68

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                "id": 6,
                "operand1": 13,
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                "id": 11,
                "operand1": 19,
                "operand2": 8,
                "operator": "-",
                "question": "19 - 8 = ___",
                "answer": 11
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                "id": 12,
                "operand1": 29,
                "operand2": 27,
                "operator": "-",
                "question": "29 - 27 = ___",
                "answer": 2
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                "operand1": 26,
                "operand2": 23,
                "operator": "-",
                "question": "26 - 23 = ___",
                "answer": 3
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                "operand1": 12,
                "operand2": 11,
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                "question": "12 - 11 = ___",
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                "operand1": 22,
                "operand2": 10,
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                "answer": 12
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                "answer": 6,
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            {
                "id": 18,
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                "operand2": 9,
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                "question": "29 - 9 = ___",
                "answer": 20
            },
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                "id": 19,
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                "answer": 16
            },
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                "operand2": 14,
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                "question": "29 - 14 = ___",
                "answer": 15
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