Workbook Detail
Missing Operator Add Sub Easy — Set 99
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{
"contentData": {
"operation": "missing-operator",
"subject": "arithmetic",
"difficulty": "easy",
"config": {
"operations": [
"+",
"-"
],
"maxNumber": 50,
"operationPair": "add-sub",
"difficulty": "easy"
},
"problems": [
{
"id": 1,
"type": "missing-operator",
"subType": "-",
"operand1": 63,
"operand2": 31,
"result": 32,
"question": "63 ○ 31 = 32, what is ○?",
"answer": "-",
"correctAnswer": "-",
"difficulty": "easy"
},
{
"id": 2,
"type": "missing-operator",
"subType": "×",
"operand1": 12,
"operand2": 3,
"result": 36,
"question": "12 ○ 3 = 36, what is ○?",
"answer": "×",
"correctAnswer": "×",
"difficulty": "easy"
},
{
"id": 3,
"type": "missing-operator",
"subType": "-",
"operand1": 53,
"operand2": 28,
"result": 25,
"question": "53 __ 28 = 25",
"answer": "-",
"correctAnswer": "-",
"difficulty": "easy"
},
{
"id": 4,
"type": "missing-operator",
"subType": "+",
"operand1": 6,
"operand2": 24,
"result": 30,
"question": "6 __ 24 = 30",
"answer": "+",
"correctAnswer": "+",
"difficulty": "easy"
},
{
"id": 5,
"type": "missing-operator",
"subType": "+",
"operand1": 25,
"operand2": 2,
"result": 27,
"question": "25 ○ 2 = 27, what is ○?",
"answer": "+",
"correctAnswer": "+",
"difficulty": "easy"
},
{
"id": 6,
"type": "missing-operator",
"subType": "-",
"operand1": 45,
"operand2": 28,
"result": 17,
"question": "45 __ 28 = 17",
"answer": "-",
"correctAnswer": "-",
"difficulty": "easy"
},
{
"id": 7,
"type": "missing-operator",
"subType": "-",
"operand1": 50,
"operand2": 38,
"result": 12,
"question": "50 __ 38 = 12",
"answer": "-",
"correctAnswer": "-",
"difficulty": "easy"
},
{
"id": 8,
"type": "missing-operator",
"subType": "-",
"operand1": 20,
"operand2": 8,
"result": 12,
"question": "20 __ 8 = 12",
"answer": "-",
"correctAnswer": "-",
"difficulty": "easy"
},
{
"id": 9,
"type": "missing-operator",
"subType": "×",
"operand1": 5,
"operand2": 6,
"result": 30,
"question": "5 __ 6 = 30",
"answer": "×",
"correctAnswer": "×",
"difficulty": "easy"
},
{
"id": 10,
"type": "missing-operator",
"subType": "-",
"operand1": 50,
"operand2": 9,
"result": 41,
"question": "50 ○ 9 = 41, what is ○?",
"answer": "-",
"correctAnswer": "-",
"difficulty": "easy"
},
{
"id": 11,
"type": "missing-operator",
"subType": "×",
"operand1": 7,
"operand2": 11,
"result": 77,
"question": "7 ○ 11 = 77, what is ○?",
"answer": "×",
"correctAnswer": "×",
"difficulty": "easy"
},
{
"id": 12,
"type": "missing-operator",
"subType": "-",
"operand1": 70,
"operand2": 49,
"result": 21,
"question": "70 ○ 49 = 21, what is ○?",
"answer": "-",
"correctAnswer": "-",
"difficulty": "easy"
},
{
"id": 13,
"type": "missing-operator",
"subType": "×",
"operand1": 11,
"operand2": 3,
"result": 33,
"question": "11 __ 3 = 33",
"answer": "×",
"correctAnswer": "×",
"difficulty": "easy"
},
{
"id": 14,
"type": "missing-operator",
"subType": "×",
"operand1": 5,
"operand2": 12,
"result": 60,
"question": "5 __ 12 = 60",
"answer": "×",
"correctAnswer": "×",
"difficulty": "easy"
},
{
"id": 15,
"type": "missing-operator",
"subType": "+",
"operand1": 9,
"operand2": 9,
"result": 18,
"question": "9 __ 9 = 18",
"answer": "+",
"correctAnswer": "+",
"difficulty": "easy"
},
{
"id": 16,
"type": "missing-operator",
"subType": "-",
"operand1": 40,
"operand2": 35,
"result": 5,
"question": "40 __ 35 = 5",
"answer": "-",
"correctAnswer": "-",
"difficulty": "easy"
},
{
"id": 17,
"type": "missing-operator",
"subType": "+",
"operand1": 38,
"operand2": 25,
"result": 63,
"question": "38 ○ 25 = 63, what is ○?",
"answer": "+",
"correctAnswer": "+",
"difficulty": "easy"
},
{
"id": 18,
"type": "missing-operator",
"subType": "×",
"operand1": 8,
"operand2": 3,
"result": 24,
"question": "8 ○ 3 = 24, what is ○?",
"answer": "×",
"correctAnswer": "×",
"difficulty": "easy"
},
{
"id": 19,
"type": "missing-operator",
"subType": "-",
"operand1": 86,
"operand2": 48,
"result": 38,
"question": "86 __ 48 = 38",
"answer": "-",
"correctAnswer": "-",
"difficulty": "easy"
},
{
"id": 20,
"type": "missing-operator",
"subType": "×",
"operand1": 2,
"operand2": 3,
"result": 6,
"question": "2 ○ 3 = 6, what is ○?",
"answer": "×",
"correctAnswer": "×",
"difficulty": "easy"
}
],
"layout": {
"columns": 2,
"problemsPerPage": 20
}
},
"_archetype": "form-exercise",
"_generatorId": "arithmetic-generator-v7.2.1"
}Teaching Notes
- 63 ○ 31 = 32, what is ○?
- 12 ○ 3 = 36, what is ○?
- 53 __ 28 = 25
- 6 __ 24 = 30
- 25 ○ 2 = 27, what is ○?
- 45 __ 28 = 17
- 50 __ 38 = 12
- 20 __ 8 = 12
- 5 __ 6 = 30
- 50 ○ 9 = 41, what is ○?
- 7 ○ 11 = 77, what is ○?
- 70 ○ 49 = 21, what is ○?
- 11 __ 3 = 33
- 5 __ 12 = 60
- 9 __ 9 = 18
- 40 __ 35 = 5
- 38 ○ 25 = 63, what is ○?
- 8 ○ 3 = 24, what is ○?
- 86 __ 48 = 38
- 2 ○ 3 = 6, what is ○?
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