Workbook Detail
Missing Operator All Ops Easy — Set 20
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"subject": "arithmetic",
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"id": 1,
"type": "missing-operator",
"subType": "+",
"operand1": 1,
"operand2": 8,
"result": 9,
"question": "1 __ 8 = 9",
"answer": "+",
"correctAnswer": "+",
"difficulty": "easy"
},
{
"id": 2,
"type": "missing-operator",
"subType": "+",
"operand1": 2,
"operand2": 10,
"result": 12,
"question": "2 ○ 10 = 12, what is ○?",
"answer": "+",
"correctAnswer": "+",
"difficulty": "easy"
},
{
"id": 3,
"type": "missing-operator",
"subType": "-",
"operand1": 13,
"operand2": 6,
"result": 7,
"question": "13 ○ 6 = 7, what is ○?",
"answer": "-",
"correctAnswer": "-",
"difficulty": "easy"
},
{
"id": 4,
"type": "missing-operator",
"subType": "+",
"operand1": 2,
"operand2": 4,
"result": 6,
"question": "2 ○ 4 = 6, what is ○?",
"answer": "+",
"correctAnswer": "+",
"difficulty": "easy"
},
{
"id": 5,
"type": "missing-operator",
"subType": "-",
"operand1": 14,
"operand2": 10,
"result": 4,
"question": "14 __ 10 = 4",
"answer": "-",
"correctAnswer": "-",
"difficulty": "easy"
},
{
"id": 6,
"type": "missing-operator",
"subType": "+",
"operand1": 8,
"operand2": 9,
"result": 17,
"question": "8 ○ 9 = 17, what is ○?",
"answer": "+",
"correctAnswer": "+",
"difficulty": "easy"
},
{
"id": 7,
"type": "missing-operator",
"subType": "×",
"operand1": 3,
"operand2": 8,
"result": 24,
"question": "3 ○ 8 = 24, what is ○?",
"answer": "×",
"correctAnswer": "×",
"difficulty": "easy"
},
{
"id": 8,
"type": "missing-operator",
"subType": "-",
"operand1": 11,
"operand2": 3,
"result": 8,
"question": "11 ○ 3 = 8, what is ○?",
"answer": "-",
"correctAnswer": "-",
"difficulty": "easy"
},
{
"id": 9,
"type": "missing-operator",
"subType": "-",
"operand1": 12,
"operand2": 7,
"result": 5,
"question": "12 __ 7 = 5",
"answer": "-",
"correctAnswer": "-",
"difficulty": "easy"
},
{
"id": 10,
"type": "missing-operator",
"subType": "+",
"operand1": 4,
"operand2": 10,
"result": 14,
"question": "4 __ 10 = 14",
"answer": "+",
"correctAnswer": "+",
"difficulty": "easy"
},
{
"id": 11,
"type": "missing-operator",
"subType": "×",
"operand1": 10,
"operand2": 6,
"result": 60,
"question": "10 ○ 6 = 60, what is ○?",
"answer": "×",
"correctAnswer": "×",
"difficulty": "easy"
},
{
"id": 12,
"type": "missing-operator",
"subType": "-",
"operand1": 13,
"operand2": 5,
"result": 8,
"question": "13 ○ 5 = 8, what is ○?",
"answer": "-",
"correctAnswer": "-",
"difficulty": "easy"
},
{
"id": 13,
"type": "missing-operator",
"subType": "+",
"operand1": 5,
"operand2": 1,
"result": 6,
"question": "5 ○ 1 = 6, what is ○?",
"answer": "+",
"correctAnswer": "+",
"difficulty": "easy"
},
{
"id": 14,
"type": "missing-operator",
"subType": "×",
"operand1": 10,
"operand2": 2,
"result": 20,
"question": "10 ○ 2 = 20, what is ○?",
"answer": "×",
"correctAnswer": "×",
"difficulty": "easy"
},
{
"id": 15,
"type": "missing-operator",
"subType": "-",
"operand1": 2,
"operand2": 1,
"result": 1,
"question": "2 ○ 1 = 1, what is ○?",
"answer": "-",
"correctAnswer": "-",
"difficulty": "easy"
},
{
"id": 16,
"type": "missing-operator",
"subType": "×",
"operand1": 9,
"operand2": 9,
"result": 81,
"question": "9 __ 9 = 81",
"answer": "×",
"correctAnswer": "×",
"difficulty": "easy"
},
{
"id": 17,
"type": "missing-operator",
"subType": "×",
"operand1": 6,
"operand2": 5,
"result": 30,
"question": "6 __ 5 = 30",
"answer": "×",
"correctAnswer": "×",
"difficulty": "easy"
},
{
"id": 18,
"type": "missing-operator",
"subType": "-",
"operand1": 9,
"operand2": 6,
"result": 3,
"question": "9 ○ 6 = 3, what is ○?",
"answer": "-",
"correctAnswer": "-",
"difficulty": "easy"
},
{
"id": 19,
"type": "missing-operator",
"subType": "+",
"operand1": 4,
"operand2": 3,
"result": 7,
"question": "4 ○ 3 = 7, what is ○?",
"answer": "+",
"correctAnswer": "+",
"difficulty": "easy"
},
{
"id": 20,
"type": "missing-operator",
"subType": "+",
"operand1": 1,
"operand2": 7,
"result": 8,
"question": "1 __ 7 = 8",
"answer": "+",
"correctAnswer": "+",
"difficulty": "easy"
}
],
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"_archetype": "form-exercise",
"_generatorId": "arithmetic-generator-v7.2.1"
}Teaching Notes
- 1 __ 8 = 9
- 2 ○ 10 = 12, what is ○?
- 13 ○ 6 = 7, what is ○?
- 2 ○ 4 = 6, what is ○?
- 14 __ 10 = 4
- 8 ○ 9 = 17, what is ○?
- 3 ○ 8 = 24, what is ○?
- 11 ○ 3 = 8, what is ○?
- 12 __ 7 = 5
- 4 __ 10 = 14
- 10 ○ 6 = 60, what is ○?
- 13 ○ 5 = 8, what is ○?
- 5 ○ 1 = 6, what is ○?
- 10 ○ 2 = 20, what is ○?
- 2 ○ 1 = 1, what is ○?
- 9 __ 9 = 81
- 6 __ 5 = 30
- 9 ○ 6 = 3, what is ○?
- 4 ○ 3 = 7, what is ○?
- 1 __ 7 = 8
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