Workbook Detail
Subtraction Within 20 Expert — Set 6
This page uses a content type that does not have a custom renderer yet. Raw structured data is shown below.
{
"_meta": {
"schemaVersion": "2.0.0",
"nodeId": "node-1-leaf-subtraction-within-20-expert",
"pageNumber": 6,
"generatedAt": "2026-03-01T01:52:08.480Z",
"generatorVersion": "v7.2.1-wp-g2",
"seed": "16582288220214791641",
"resolvedParams": {
"expectedPuzzleSize": null,
"expectedSize": null,
"expectedDifficulty": "expert",
"expectedVariant": null,
"displayDifficulty": "expert",
"theme": null,
"contentType": null,
"source": {
"puzzleSize": "config",
"size": "config",
"difficulty": "slug",
"variant": "config"
}
},
"contractVersion": "1.0",
"canonicalVersion": "2.0",
"archetype": "form-exercise",
"contentHash": "cbbfeb26e9e0c74976c5a2df12868e0ee40e134e40a5ef64936b259b2723f18c",
"fallbackReason": null
},
"title": "form-exercise set 6",
"operation": "subtraction",
"subject": "arithmetic",
"difficulty": "expert",
"config": {
"maxNumber": 10,
"regrouping": false,
"operation": "subtraction",
"difficulty": "expert"
},
"problems": [
{
"id": 1,
"operand1": 9,
"operand2": 7,
"operator": "-",
"answer": 2
},
{
"id": 2,
"operand1": 9,
"operand2": 3,
"operator": "-",
"answer": 6
},
{
"id": 3,
"operand1": 8,
"operand2": 5,
"operator": "-",
"answer": 3
},
{
"id": 4,
"operand1": 4,
"operand2": 2,
"operator": "-",
"answer": 2
},
{
"id": 5,
"operand1": 6,
"operand2": 1,
"operator": "-",
"answer": 5
},
{
"id": 6,
"operand1": 3,
"operand2": 1,
"operator": "-",
"answer": 2
},
{
"id": 7,
"operand1": 8,
"operand2": 5,
"operator": "-",
"answer": 3
},
{
"id": 8,
"operand1": 5,
"operand2": 3,
"operator": "-",
"answer": 2
},
{
"id": 9,
"operand1": 8,
"operand2": 3,
"operator": "-",
"answer": 5
},
{
"id": 10,
"operand1": 2,
"operand2": 1,
"operator": "-",
"answer": 1
},
{
"id": 11,
"operand1": 5,
"operand2": 3,
"operator": "-",
"answer": 2
},
{
"id": 12,
"operand1": 7,
"operand2": 2,
"operator": "-",
"answer": 5
},
{
"id": 13,
"operand1": 5,
"operand2": 4,
"operator": "-",
"answer": 1
},
{
"id": 14,
"operand1": 2,
"operand2": 1,
"operator": "-",
"answer": 1
},
{
"id": 15,
"operand1": 6,
"operand2": 4,
"operator": "-",
"answer": 2
},
{
"id": 16,
"operand1": 7,
"operand2": 4,
"operator": "-",
"answer": 3
},
{
"id": 17,
"operand1": 5,
"operand2": 3,
"operator": "-",
"answer": 2
},
{
"id": 18,
"operand1": 8,
"operand2": 6,
"operator": "-",
"answer": 2
},
{
"id": 19,
"operand1": 8,
"operand2": 5,
"operator": "-",
"answer": 3
},
{
"id": 20,
"operand1": 2,
"operand2": 1,
"operator": "-",
"answer": 1
}
],
"layout": {
"columns": 2,
"problemsPerPage": 20
},
"_archetype": null,
"_generatorId": null
}Teaching Notes
9
-7
9
-3
8
-5
4
-2
6
-1
3
-1
8
-5
5
-3
8
-3
2
-1
5
-3
7
-2
5
-4
2
-1
6
-4
7
-4
5
-3
8
-6
8
-5
2
-1
Practice subtraction within 20 with free printable worksheets. Uniquely generated — reinforce key math skills with every set.
Frequently Asked Questions
How do I use this Subtraction Within 20 Expert Worksheets worksheet?
Print the worksheet and complete the problems. Each set number generates a unique arrangement. Use the same set number for all students in a class for consistent assessment.
Is there an answer key?
Yes — every worksheet includes a complete answer key. Print it separately or view it on screen.