Workbook Detail
Number Sense Patterns Missing Operator — Set 71
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"question": "9 ○ 9 = 81, what is ○?",
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"subType": "+",
"operand1": 1,
"operand2": 1,
"result": 2,
"question": "1 __ 1 = 2",
"answer": "+",
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"id": 6,
"type": "missing-operator",
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"operand1": 12,
"operand2": 5,
"result": 7,
"question": "12 __ 5 = 7",
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"operand1": 3,
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"type": "missing-operator",
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"operand1": 21,
"operand2": 3,
"result": 7,
"question": "21 ○ 3 = 7, what is ○?",
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"operand1": 10,
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"result": 9,
"question": "10 __ 1 = 9",
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"result": 13,
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"id": 11,
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"operand1": 10,
"operand2": 10,
"result": 100,
"question": "10 ○ 10 = 100, what is ○?",
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{
"id": 12,
"type": "missing-operator",
"subType": "-",
"operand1": 4,
"operand2": 2,
"result": 2,
"question": "4 __ 2 = 2",
"answer": "-",
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"id": 13,
"type": "missing-operator",
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"operand1": 4,
"operand2": 10,
"result": 40,
"question": "4 ○ 10 = 40, what is ○?",
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{
"id": 14,
"type": "missing-operator",
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"operand1": 6,
"operand2": 7,
"result": 13,
"question": "6 __ 7 = 13",
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"id": 15,
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"operand1": 7,
"operand2": 2,
"result": 14,
"question": "7 ○ 2 = 14, what is ○?",
"answer": "×",
"correctAnswer": "×",
"difficulty": "normal"
},
{
"id": 16,
"type": "missing-operator",
"subType": "÷",
"operand1": 70,
"operand2": 7,
"result": 10,
"question": "70 __ 7 = 10",
"answer": "÷",
"correctAnswer": "÷",
"difficulty": "normal"
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"id": 17,
"type": "missing-operator",
"subType": "×",
"operand1": 5,
"operand2": 8,
"result": 40,
"question": "5 ○ 8 = 40, what is ○?",
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"id": 18,
"type": "missing-operator",
"subType": "×",
"operand1": 7,
"operand2": 8,
"result": 56,
"question": "7 __ 8 = 56",
"answer": "×",
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"id": 19,
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"operand1": 6,
"operand2": 5,
"result": 1,
"question": "6 ○ 5 = 1, what is ○?",
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"operand1": 12,
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