Workbook Detail
Number Sense Patterns Missing Operator — Set 13
This page uses a content type that does not have a custom renderer yet. Raw structured data is shown below.
{
"outputTargets": {
"screen": true,
"print": true,
"pdf": true,
"answerKey": true
},
"_meta": {
"nodeId": "node-1-ns-missing-operator",
"pageNumber": 13,
"generatedAt": "2026-03-16T15:22:51.766Z",
"generatorVersion": "v7.2.1-wp-g2",
"seed": "8c0658f743e6a031",
"seedInput": "1|node-1-ns-missing-operator|13|1.0.0|",
"schemaVersion": "2.0.0",
"mathTemplateId": null,
"archetype": "form-exercise",
"siteId": 1
},
"semantics": {
"solvability": {
"isDeterministic": true,
"solutionCount": 1
},
"difficulty": {
"declaredLevel": "easy",
"computedScore": 50,
"metrics": {
"problemCount": 20,
"operation": "missing-operator",
"digits": 2,
"regrouping": false
}
},
"diversity": {
"structuralHash": "079b8b6eb5f463b0b665b01f69b624f0",
"contentFingerprint": "308ae35755e5d5db"
},
"interaction": {
"checkable": true,
"revealable": true,
"randomizable": true,
"hintable": false,
"progressable": true,
"inputType": [
"text-input"
]
}
},
"version": "2.0",
"generatorId": "arithmetic-generator-v7.2.1",
"operation": "missing-operator",
"subject": "arithmetic",
"difficulty": "easy",
"config": {
"maxNumber": 10
},
"problems": [
{
"id": 1,
"type": "missing-operator",
"subType": "+",
"operand1": 5,
"operand2": 7,
"result": 12,
"question": "5 ○ 7 = 12, what is ○?",
"answer": "+",
"correctAnswer": "+",
"difficulty": "normal"
},
{
"id": 2,
"type": "missing-operator",
"subType": "-",
"operand1": 10,
"operand2": 2,
"result": 8,
"question": "10 __ 2 = 8",
"answer": "-",
"correctAnswer": "-",
"difficulty": "normal"
},
{
"id": 3,
"type": "missing-operator",
"subType": "+",
"operand1": 10,
"operand2": 6,
"result": 16,
"question": "10 __ 6 = 16",
"answer": "+",
"correctAnswer": "+",
"difficulty": "normal"
},
{
"id": 4,
"type": "missing-operator",
"subType": "×",
"operand1": 10,
"operand2": 4,
"result": 40,
"question": "10 __ 4 = 40",
"answer": "×",
"correctAnswer": "×",
"difficulty": "normal"
},
{
"id": 5,
"type": "missing-operator",
"subType": "-",
"operand1": 16,
"operand2": 7,
"result": 9,
"question": "16 __ 7 = 9",
"answer": "-",
"correctAnswer": "-",
"difficulty": "normal"
},
{
"id": 6,
"type": "missing-operator",
"subType": "-",
"operand1": 17,
"operand2": 8,
"result": 9,
"question": "17 ○ 8 = 9, what is ○?",
"answer": "-",
"correctAnswer": "-",
"difficulty": "normal"
},
{
"id": 7,
"type": "missing-operator",
"subType": "×",
"operand1": 5,
"operand2": 8,
"result": 40,
"question": "5 ○ 8 = 40, what is ○?",
"answer": "×",
"correctAnswer": "×",
"difficulty": "normal"
},
{
"id": 8,
"type": "missing-operator",
"subType": "×",
"operand1": 8,
"operand2": 3,
"result": 24,
"question": "8 __ 3 = 24",
"answer": "×",
"correctAnswer": "×",
"difficulty": "normal"
},
{
"id": 9,
"type": "missing-operator",
"subType": "×",
"operand1": 8,
"operand2": 10,
"result": 80,
"question": "8 ○ 10 = 80, what is ○?",
"answer": "×",
"correctAnswer": "×",
"difficulty": "normal"
},
{
"id": 10,
"type": "missing-operator",
"subType": "-",
"operand1": 3,
"operand2": 1,
"result": 2,
"question": "3 __ 1 = 2",
"answer": "-",
"correctAnswer": "-",
"difficulty": "normal"
},
{
"id": 11,
"type": "missing-operator",
"subType": "+",
"operand1": 1,
"operand2": 2,
"result": 3,
"question": "1 ○ 2 = 3, what is ○?",
"answer": "+",
"correctAnswer": "+",
"difficulty": "normal"
},
{
"id": 12,
"type": "missing-operator",
"subType": "×",
"operand1": 3,
"operand2": 7,
"result": 21,
"question": "3 __ 7 = 21",
"answer": "×",
"correctAnswer": "×",
"difficulty": "normal"
},
{
"id": 13,
"type": "missing-operator",
"subType": "×",
"operand1": 8,
"operand2": 9,
"result": 72,
"question": "8 ○ 9 = 72, what is ○?",
"answer": "×",
"correctAnswer": "×",
"difficulty": "normal"
},
{
"id": 14,
"type": "missing-operator",
"subType": "÷",
"operand1": 8,
"operand2": 2,
"result": 4,
"question": "8 __ 2 = 4",
"answer": "÷",
"correctAnswer": "÷",
"difficulty": "normal"
},
{
"id": 15,
"type": "missing-operator",
"subType": "÷",
"operand1": 24,
"operand2": 8,
"result": 3,
"question": "24 ○ 8 = 3, what is ○?",
"answer": "÷",
"correctAnswer": "÷",
"difficulty": "normal"
},
{
"id": 16,
"type": "missing-operator",
"subType": "-",
"operand1": 16,
"operand2": 10,
"result": 6,
"question": "16 ○ 10 = 6, what is ○?",
"answer": "-",
"correctAnswer": "-",
"difficulty": "normal"
},
{
"id": 17,
"type": "missing-operator",
"subType": "÷",
"operand1": 20,
"operand2": 2,
"result": 10,
"question": "20 __ 2 = 10",
"answer": "÷",
"correctAnswer": "÷",
"difficulty": "normal"
},
{
"id": 18,
"type": "missing-operator",
"subType": "+",
"operand1": 7,
"operand2": 6,
"result": 13,
"question": "7 __ 6 = 13",
"answer": "+",
"correctAnswer": "+",
"difficulty": "normal"
},
{
"id": 19,
"type": "missing-operator",
"subType": "+",
"operand1": 3,
"operand2": 6,
"result": 9,
"question": "3 __ 6 = 9",
"answer": "+",
"correctAnswer": "+",
"difficulty": "normal"
},
{
"id": 20,
"type": "missing-operator",
"subType": "×",
"operand1": 5,
"operand2": 4,
"result": 20,
"question": "5 ○ 4 = 20, what is ○?",
"answer": "×",
"correctAnswer": "×",
"difficulty": "normal"
}
],
"layout": {
"columns": 2,
"problemsPerPage": 20
},
"_archetype": "form-exercise",
"_generatorId": "arithmetic-generator-v7.2.1"
}