Number Chain Mixed Medium — Set 71

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        "subject": "arithmetic",
        "difficulty": "medium",
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            "maxNumber": 10
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        "problems": [
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                "type": "number-chain",
                "subType": "number-chain",
                "start": 5,
                "steps": [
                    {
                        "op": "-",
                        "operand": 3
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                    {
                        "op": "-",
                        "operand": 1
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                    {
                        "op": "x",
                        "operand": 2
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                "answer": 1,
                "question": "Number Chain: 5 → -3 → -1 → x2 → -1 → ?",
                "difficulty": "medium"
            },
            {
                "type": "number-chain",
                "subType": "number-chain",
                "start": 10,
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                        "op": "x",
                        "operand": 5
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                        "op": "x",
                        "operand": 5
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                        "op": "x",
                        "operand": 3
                    },
                    {
                        "op": "x",
                        "operand": 2
                    }
                ],
                "answer": 1500,
                "question": "Number Chain: 10 → x5 → x5 → x3 → x2 → ?",
                "difficulty": "medium"
            },
            {
                "type": "number-chain",
                "subType": "number-chain",
                "start": 8,
                "steps": [
                    {
                        "op": "x",
                        "operand": 4
                    },
                    {
                        "op": "-",
                        "operand": 2
                    },
                    {
                        "op": "+",
                        "operand": 9
                    },
                    {
                        "op": "+",
                        "operand": 8
                    }
                ],
                "answer": 47,
                "question": "Number Chain: 8 → x4 → -2 → +9 → +8 → ?",
                "difficulty": "medium"
            },
            {
                "type": "number-chain",
                "subType": "number-chain",
                "start": 6,
                "steps": [
                    {
                        "op": "+",
                        "operand": 4
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                    {
                        "op": "x",
                        "operand": 5
                    },
                    {
                        "op": "+",
                        "operand": 9
                    },
                    {
                        "op": "x",
                        "operand": 3
                    }
                ],
                "answer": 177,
                "question": "Number Chain: 6 → +4 → x5 → +9 → x3 → ?",
                "difficulty": "medium"
            },
            {
                "type": "number-chain",
                "subType": "number-chain",
                "start": 1,
                "steps": [
                    {
                        "op": "+",
                        "operand": 5
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                    {
                        "op": "+",
                        "operand": 7
                    },
                    {
                        "op": "-",
                        "operand": 2
                    },
                    {
                        "op": "-",
                        "operand": 1
                    }
                ],
                "answer": 10,
                "question": "Number Chain: 1 → +5 → +7 → -2 → -1 → ?",
                "difficulty": "medium"
            },
            {
                "type": "number-chain",
                "subType": "number-chain",
                "start": 9,
                "steps": [
                    {
                        "op": "-",
                        "operand": 4
                    },
                    {
                        "op": "x",
                        "operand": 3
                    },
                    {
                        "op": "-",
                        "operand": 12
                    },
                    {
                        "op": "+",
                        "operand": 2
                    }
                ],
                "answer": 5,
                "question": "Number Chain: 9 → -4 → x3 → -12 → +2 → ?",
                "difficulty": "medium"
            },
            {
                "type": "number-chain",
                "subType": "number-chain",
                "start": 3,
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                        "op": "x",
                        "operand": 3
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                        "op": "x",
                        "operand": 5
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                    {
                        "op": "x",
                        "operand": 2
                    },
                    {
                        "op": "-",
                        "operand": 61
                    }
                ],
                "answer": 29,
                "question": "Number Chain: 3 → x3 → x5 → x2 → -61 → ?",
                "difficulty": "medium"
            },
            {
                "type": "number-chain",
                "subType": "number-chain",
                "start": 2,
                "steps": [
                    {
                        "op": "+",
                        "operand": 3
                    },
                    {
                        "op": "-",
                        "operand": 2
                    },
                    {
                        "op": "x",
                        "operand": 3
                    },
                    {
                        "op": "+",
                        "operand": 3
                    }
                ],
                "answer": 12,
                "question": "Number Chain: 2 → +3 → -2 → x3 → +3 → ?",
                "difficulty": "medium"
            }
        ],
        "layout": {
            "columns": 2,
            "problemsPerPage": 20
        }
    },
    "_archetype": "form-exercise",
    "_generatorId": "arithmetic-generator-v7.2.1"
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