Workbook Detail
Missing Operator Add Sub Medium — Set 47
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{
"contentData": {
"operation": "missing-operator",
"subject": "arithmetic",
"difficulty": "medium",
"config": {
"operations": [
"+",
"-"
],
"maxNumber": 50,
"operationPair": "add-sub",
"difficulty": "medium"
},
"problems": [
{
"id": 1,
"type": "missing-operator",
"subType": "-",
"operand1": 45,
"operand2": 9,
"result": 36,
"question": "45 ○ 9 = 36, what is ○?",
"answer": "-",
"correctAnswer": "-",
"difficulty": "medium"
},
{
"id": 2,
"type": "missing-operator",
"subType": "÷",
"operand1": 30,
"operand2": 6,
"result": 5,
"question": "30 ○ 6 = 5, what is ○?",
"answer": "÷",
"correctAnswer": "÷",
"difficulty": "medium"
},
{
"id": 3,
"type": "missing-operator",
"subType": "×",
"operand1": 2,
"operand2": 8,
"result": 16,
"question": "2 ○ 8 = 16, what is ○?",
"answer": "×",
"correctAnswer": "×",
"difficulty": "medium"
},
{
"id": 4,
"type": "missing-operator",
"subType": "÷",
"operand1": 27,
"operand2": 9,
"result": 3,
"question": "27 __ 9 = 3",
"answer": "÷",
"correctAnswer": "÷",
"difficulty": "medium"
},
{
"id": 5,
"type": "missing-operator",
"subType": "×",
"operand1": 8,
"operand2": 11,
"result": 88,
"question": "8 __ 11 = 88",
"answer": "×",
"correctAnswer": "×",
"difficulty": "medium"
},
{
"id": 6,
"type": "missing-operator",
"subType": "÷",
"operand1": 132,
"operand2": 11,
"result": 12,
"question": "132 ○ 11 = 12, what is ○?",
"answer": "÷",
"correctAnswer": "÷",
"difficulty": "medium"
},
{
"id": 7,
"type": "missing-operator",
"subType": "×",
"operand1": 7,
"operand2": 8,
"result": 56,
"question": "7 ○ 8 = 56, what is ○?",
"answer": "×",
"correctAnswer": "×",
"difficulty": "medium"
},
{
"id": 8,
"type": "missing-operator",
"subType": "×",
"operand1": 11,
"operand2": 6,
"result": 66,
"question": "11 __ 6 = 66",
"answer": "×",
"correctAnswer": "×",
"difficulty": "medium"
},
{
"id": 9,
"type": "missing-operator",
"subType": "÷",
"operand1": 33,
"operand2": 11,
"result": 3,
"question": "33 __ 11 = 3",
"answer": "÷",
"correctAnswer": "÷",
"difficulty": "medium"
},
{
"id": 10,
"type": "missing-operator",
"subType": "-",
"operand1": 48,
"operand2": 40,
"result": 8,
"question": "48 ○ 40 = 8, what is ○?",
"answer": "-",
"correctAnswer": "-",
"difficulty": "medium"
},
{
"id": 11,
"type": "missing-operator",
"subType": "÷",
"operand1": 16,
"operand2": 8,
"result": 2,
"question": "16 __ 8 = 2",
"answer": "÷",
"correctAnswer": "÷",
"difficulty": "medium"
},
{
"id": 12,
"type": "missing-operator",
"subType": "+",
"operand1": 18,
"operand2": 36,
"result": 54,
"question": "18 ○ 36 = 54, what is ○?",
"answer": "+",
"correctAnswer": "+",
"difficulty": "medium"
},
{
"id": 13,
"type": "missing-operator",
"subType": "÷",
"operand1": 88,
"operand2": 8,
"result": 11,
"question": "88 ○ 8 = 11, what is ○?",
"answer": "÷",
"correctAnswer": "÷",
"difficulty": "medium"
},
{
"id": 14,
"type": "missing-operator",
"subType": "-",
"operand1": 31,
"operand2": 22,
"result": 9,
"question": "31 ○ 22 = 9, what is ○?",
"answer": "-",
"correctAnswer": "-",
"difficulty": "medium"
},
{
"id": 15,
"type": "missing-operator",
"subType": "+",
"operand1": 45,
"operand2": 11,
"result": 56,
"question": "45 ○ 11 = 56, what is ○?",
"answer": "+",
"correctAnswer": "+",
"difficulty": "medium"
},
{
"id": 16,
"type": "missing-operator",
"subType": "×",
"operand1": 7,
"operand2": 12,
"result": 84,
"question": "7 __ 12 = 84",
"answer": "×",
"correctAnswer": "×",
"difficulty": "medium"
},
{
"id": 17,
"type": "missing-operator",
"subType": "-",
"operand1": 60,
"operand2": 37,
"result": 23,
"question": "60 ○ 37 = 23, what is ○?",
"answer": "-",
"correctAnswer": "-",
"difficulty": "medium"
},
{
"id": 18,
"type": "missing-operator",
"subType": "×",
"operand1": 6,
"operand2": 2,
"result": 12,
"question": "6 ○ 2 = 12, what is ○?",
"answer": "×",
"correctAnswer": "×",
"difficulty": "medium"
},
{
"id": 19,
"type": "missing-operator",
"subType": "+",
"operand1": 42,
"operand2": 36,
"result": 78,
"question": "42 __ 36 = 78",
"answer": "+",
"correctAnswer": "+",
"difficulty": "medium"
},
{
"id": 20,
"type": "missing-operator",
"subType": "×",
"operand1": 7,
"operand2": 3,
"result": 21,
"question": "7 ○ 3 = 21, what is ○?",
"answer": "×",
"correctAnswer": "×",
"difficulty": "medium"
}
],
"layout": {
"columns": 2,
"problemsPerPage": 20
}
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"_archetype": "form-exercise",
"_generatorId": "arithmetic-generator-v7.2.1"
}Teaching Notes
- 45 ○ 9 = 36, what is ○?
- 30 ○ 6 = 5, what is ○?
- 2 ○ 8 = 16, what is ○?
- 27 __ 9 = 3
- 8 __ 11 = 88
- 132 ○ 11 = 12, what is ○?
- 7 ○ 8 = 56, what is ○?
- 11 __ 6 = 66
- 33 __ 11 = 3
- 48 ○ 40 = 8, what is ○?
- 16 __ 8 = 2
- 18 ○ 36 = 54, what is ○?
- 88 ○ 8 = 11, what is ○?
- 31 ○ 22 = 9, what is ○?
- 45 ○ 11 = 56, what is ○?
- 7 __ 12 = 84
- 60 ○ 37 = 23, what is ○?
- 6 ○ 2 = 12, what is ○?
- 42 __ 36 = 78
- 7 ○ 3 = 21, what is ○?
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