B Set 4 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": "addition",
        "subject": "arithmetic",
        "difficulty": "medium",
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            "operation": "addition",
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        "problems": [
            {
                "id": 1,
                "operand1": 3,
                "operand2": 116,
                "operator": "+",
                "question": "3 + 116 = ___",
                "answer": 119
            },
            {
                "id": 2,
                "operand1": 407,
                "operand2": 12,
                "operator": "+",
                "question": "407 + 12 = ___",
                "answer": 419
            },
            {
                "id": 3,
                "operand1": 110,
                "operand2": 147,
                "operator": "+",
                "question": "110 + 147 = ___",
                "answer": 257
            },
            {
                "id": 4,
                "operand1": 123,
                "operand2": 100,
                "operator": "+",
                "question": "123 + 100 = ___",
                "answer": 223
            },
            {
                "id": 5,
                "operand1": 426,
                "operand2": 351,
                "operator": "+",
                "question": "426 + 351 = ___",
                "answer": 777
            },
            {
                "id": 6,
                "operand1": 380,
                "operand2": 401,
                "operator": "+",
                "question": "380 + 401 = ___",
                "answer": 781
            },
            {
                "id": 7,
                "operand1": 403,
                "operand2": 436,
                "operator": "+",
                "question": "403 + 436 = ___",
                "answer": 839
            },
            {
                "id": 8,
                "operand1": 50,
                "operand2": 448,
                "operator": "+",
                "question": "50 + 448 = ___",
                "answer": 498
            },
            {
                "id": 9,
                "operand1": 380,
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                "operator": "+",
                "question": "380 + 219 = ___",
                "answer": 599
            },
            {
                "id": 10,
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                "operator": "+",
                "question": "104 + 731 = ___",
                "answer": 835
            },
            {
                "id": 11,
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                "operand2": 600,
                "operator": "+",
                "question": "269 + 600 = ___",
                "answer": 869
            },
            {
                "id": 12,
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                "operator": "+",
                "question": "154 + 425 = ___",
                "answer": 579
            },
            {
                "id": 13,
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                "operand2": 212,
                "operator": "+",
                "question": "55 + 212 = ___",
                "answer": 267
            },
            {
                "id": 14,
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                "operator": "+",
                "question": "342 + 141 = ___",
                "answer": 483
            },
            {
                "id": 15,
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                "operator": "+",
                "question": "221 + 728 = ___",
                "answer": 949
            },
            {
                "id": 16,
                "operand1": 332,
                "operand2": 541,
                "operator": "+",
                "question": "332 + 541 = ___",
                "answer": 873
            },
            {
                "id": 17,
                "operand1": 409,
                "operand2": 560,
                "operator": "+",
                "question": "409 + 560 = ___",
                "answer": 969
            },
            {
                "id": 18,
                "operand1": 10,
                "operand2": 951,
                "operator": "+",
                "question": "10 + 951 = ___",
                "answer": 961
            },
            {
                "id": 19,
                "operand1": 104,
                "operand2": 440,
                "operator": "+",
                "question": "104 + 440 = ___",
                "answer": 544
            },
            {
                "id": 20,
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                "operand2": 350,
                "operator": "+",
                "question": "321 + 350 = ___",
                "answer": 671
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    "_archetype": "form-exercise",
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