Workbook Detail
Missing Operator Add Sub Easy — Set 73
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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": 14,
"operand2": 8,
"result": 6,
"question": "14 ○ 8 = 6, what is ○?",
"answer": "-",
"correctAnswer": "-",
"difficulty": "easy"
},
{
"id": 2,
"type": "missing-operator",
"subType": "+",
"operand1": 8,
"operand2": 35,
"result": 43,
"question": "8 ○ 35 = 43, what is ○?",
"answer": "+",
"correctAnswer": "+",
"difficulty": "easy"
},
{
"id": 3,
"type": "missing-operator",
"subType": "+",
"operand1": 29,
"operand2": 36,
"result": 65,
"question": "29 __ 36 = 65",
"answer": "+",
"correctAnswer": "+",
"difficulty": "easy"
},
{
"id": 4,
"type": "missing-operator",
"subType": "-",
"operand1": 36,
"operand2": 3,
"result": 33,
"question": "36 __ 3 = 33",
"answer": "-",
"correctAnswer": "-",
"difficulty": "easy"
},
{
"id": 5,
"type": "missing-operator",
"subType": "+",
"operand1": 20,
"operand2": 46,
"result": 66,
"question": "20 ○ 46 = 66, what is ○?",
"answer": "+",
"correctAnswer": "+",
"difficulty": "easy"
},
{
"id": 6,
"type": "missing-operator",
"subType": "-",
"operand1": 34,
"operand2": 18,
"result": 16,
"question": "34 ○ 18 = 16, what is ○?",
"answer": "-",
"correctAnswer": "-",
"difficulty": "easy"
},
{
"id": 7,
"type": "missing-operator",
"subType": "-",
"operand1": 91,
"operand2": 41,
"result": 50,
"question": "91 ○ 41 = 50, what is ○?",
"answer": "-",
"correctAnswer": "-",
"difficulty": "easy"
},
{
"id": 8,
"type": "missing-operator",
"subType": "-",
"operand1": 42,
"operand2": 31,
"result": 11,
"question": "42 __ 31 = 11",
"answer": "-",
"correctAnswer": "-",
"difficulty": "easy"
},
{
"id": 9,
"type": "missing-operator",
"subType": "×",
"operand1": 2,
"operand2": 10,
"result": 20,
"question": "2 ○ 10 = 20, what is ○?",
"answer": "×",
"correctAnswer": "×",
"difficulty": "easy"
},
{
"id": 10,
"type": "missing-operator",
"subType": "+",
"operand1": 45,
"operand2": 25,
"result": 70,
"question": "45 ○ 25 = 70, what is ○?",
"answer": "+",
"correctAnswer": "+",
"difficulty": "easy"
},
{
"id": 11,
"type": "missing-operator",
"subType": "+",
"operand1": 3,
"operand2": 7,
"result": 10,
"question": "3 __ 7 = 10",
"answer": "+",
"correctAnswer": "+",
"difficulty": "easy"
},
{
"id": 12,
"type": "missing-operator",
"subType": "+",
"operand1": 21,
"operand2": 30,
"result": 51,
"question": "21 __ 30 = 51",
"answer": "+",
"correctAnswer": "+",
"difficulty": "easy"
},
{
"id": 13,
"type": "missing-operator",
"subType": "-",
"operand1": 51,
"operand2": 38,
"result": 13,
"question": "51 ○ 38 = 13, what is ○?",
"answer": "-",
"correctAnswer": "-",
"difficulty": "easy"
},
{
"id": 14,
"type": "missing-operator",
"subType": "+",
"operand1": 39,
"operand2": 16,
"result": 55,
"question": "39 ○ 16 = 55, what is ○?",
"answer": "+",
"correctAnswer": "+",
"difficulty": "easy"
},
{
"id": 15,
"type": "missing-operator",
"subType": "×",
"operand1": 4,
"operand2": 12,
"result": 48,
"question": "4 ○ 12 = 48, what is ○?",
"answer": "×",
"correctAnswer": "×",
"difficulty": "easy"
},
{
"id": 16,
"type": "missing-operator",
"subType": "+",
"operand1": 26,
"operand2": 5,
"result": 31,
"question": "26 __ 5 = 31",
"answer": "+",
"correctAnswer": "+",
"difficulty": "easy"
},
{
"id": 17,
"type": "missing-operator",
"subType": "-",
"operand1": 52,
"operand2": 5,
"result": 47,
"question": "52 __ 5 = 47",
"answer": "-",
"correctAnswer": "-",
"difficulty": "easy"
},
{
"id": 18,
"type": "missing-operator",
"subType": "-",
"operand1": 55,
"operand2": 35,
"result": 20,
"question": "55 ○ 35 = 20, what is ○?",
"answer": "-",
"correctAnswer": "-",
"difficulty": "easy"
},
{
"id": 19,
"type": "missing-operator",
"subType": "+",
"operand1": 3,
"operand2": 25,
"result": 28,
"question": "3 __ 25 = 28",
"answer": "+",
"correctAnswer": "+",
"difficulty": "easy"
},
{
"id": 20,
"type": "missing-operator",
"subType": "-",
"operand1": 44,
"operand2": 17,
"result": 27,
"question": "44 ○ 17 = 27, what is ○?",
"answer": "-",
"correctAnswer": "-",
"difficulty": "easy"
}
],
"layout": {
"columns": 2,
"problemsPerPage": 20
}
},
"_archetype": "form-exercise",
"_generatorId": "arithmetic-generator-v7.2.1"
}Teaching Notes
- 14 ○ 8 = 6, what is ○?
- 8 ○ 35 = 43, what is ○?
- 29 __ 36 = 65
- 36 __ 3 = 33
- 20 ○ 46 = 66, what is ○?
- 34 ○ 18 = 16, what is ○?
- 91 ○ 41 = 50, what is ○?
- 42 __ 31 = 11
- 2 ○ 10 = 20, what is ○?
- 45 ○ 25 = 70, what is ○?
- 3 __ 7 = 10
- 21 __ 30 = 51
- 51 ○ 38 = 13, what is ○?
- 39 ○ 16 = 55, what is ○?
- 4 ○ 12 = 48, what is ○?
- 26 __ 5 = 31
- 52 __ 5 = 47
- 55 ○ 35 = 20, what is ○?
- 3 __ 25 = 28
- 44 ○ 17 = 27, what is ○?
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