Subtraction Number Range Within 500 — Set 66

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        "subject": "arithmetic",
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            "maxNumber": 500,
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            "operation": "subtraction",
            "maxSum": 500
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                "id": 1,
                "operand1": 177,
                "operand2": 72,
                "operator": "-",
                "question": "177 - 72 = ___",
                "answer": 105
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                "operand1": 6,
                "operand2": 4,
                "operator": "-",
                "question": "6 - 4 = ___",
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            {
                "id": 3,
                "operand1": 117,
                "operand2": 104,
                "operator": "-",
                "question": "117 - 104 = ___",
                "answer": 13
            },
            {
                "id": 4,
                "operand1": 469,
                "operand2": 301,
                "operator": "-",
                "question": "469 - 301 = ___",
                "answer": 168
            },
            {
                "id": 5,
                "operand1": 125,
                "operand2": 14,
                "operator": "-",
                "question": "125 - 14 = ___",
                "answer": 111
            },
            {
                "id": 6,
                "operand1": 9,
                "operand2": 4,
                "operator": "-",
                "question": "9 - 4 = ___",
                "answer": 5,
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            {
                "id": 7,
                "operand1": 236,
                "operand2": 3,
                "operator": "-",
                "question": "236 - 3 = ___",
                "answer": 233
            },
            {
                "id": 8,
                "operand1": 398,
                "operand2": 65,
                "operator": "-",
                "question": "398 - 65 = ___",
                "answer": 333
            },
            {
                "id": 9,
                "operand1": 358,
                "operand2": 314,
                "operator": "-",
                "question": "358 - 314 = ___",
                "answer": 44
            },
            {
                "id": 10,
                "operand1": 456,
                "operand2": 201,
                "operator": "-",
                "question": "456 - 201 = ___",
                "answer": 255
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            {
                "id": 11,
                "operand1": 173,
                "operand2": 170,
                "operator": "-",
                "question": "173 - 170 = ___",
                "answer": 3
            },
            {
                "id": 12,
                "operand1": 185,
                "operand2": 174,
                "operator": "-",
                "question": "185 - 174 = ___",
                "answer": 11
            },
            {
                "id": 13,
                "operand1": 11,
                "operand2": 10,
                "operator": "-",
                "question": "11 - 10 = ___",
                "answer": 1
            },
            {
                "id": 14,
                "operand1": 399,
                "operand2": 324,
                "operator": "-",
                "question": "399 - 324 = ___",
                "answer": 75
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                "id": 15,
                "operand1": 146,
                "operand2": 115,
                "operator": "-",
                "question": "146 - 115 = ___",
                "answer": 31
            },
            {
                "id": 16,
                "operand1": 231,
                "operand2": 1,
                "operator": "-",
                "question": "231 - 1 = ___",
                "answer": 230
            },
            {
                "id": 17,
                "operand1": 431,
                "operand2": 101,
                "operator": "-",
                "question": "431 - 101 = ___",
                "answer": 330
            },
            {
                "id": 18,
                "operand1": 159,
                "operand2": 38,
                "operator": "-",
                "question": "159 - 38 = ___",
                "answer": 121
            },
            {
                "id": 19,
                "operand1": 179,
                "operand2": 165,
                "operator": "-",
                "question": "179 - 165 = ___",
                "answer": 14
            },
            {
                "id": 20,
                "operand1": 27,
                "operand2": 26,
                "operator": "-",
                "question": "27 - 26 = ___",
                "answer": 1
            }
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