Workbook Detail
Subtraction Number Range Within 30 — Set 93
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{
"contentData": {
"operation": "subtraction",
"subject": "arithmetic",
"difficulty": "medium",
"config": {
"maxNumber": 30,
"regrouping": false,
"operation": "subtraction",
"maxSum": 30
},
"problems": [
{
"id": 1,
"operand1": 20,
"operand2": 10,
"operator": "-",
"question": "20 - 10 = ___",
"answer": 10
},
{
"id": 2,
"operand1": 14,
"operand2": 12,
"operator": "-",
"question": "14 - 12 = ___",
"answer": 2
},
{
"id": 3,
"operand1": 13,
"operand2": 1,
"operator": "-",
"question": "13 - 1 = ___",
"answer": 12
},
{
"id": 4,
"operand1": 12,
"operand2": 10,
"operator": "-",
"question": "12 - 10 = ___",
"answer": 2
},
{
"id": 5,
"operand1": 25,
"operand2": 20,
"operator": "-",
"question": "25 - 20 = ___",
"answer": 5
},
{
"id": 6,
"operand1": 27,
"operand2": 23,
"operator": "-",
"question": "27 - 23 = ___",
"answer": 4
},
{
"id": 7,
"operand1": 9,
"operand2": 8,
"operator": "-",
"question": "9 - 8 = ___",
"answer": 1,
"visualIntent": {
"layout": "picture-equation",
"operation": "subtract",
"items": [
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"count": 9,
"role": "groupA"
},
{
"count": 8,
"role": "groupB"
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"crossedCount": 8
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},
{
"id": 8,
"operand1": 29,
"operand2": 6,
"operator": "-",
"question": "29 - 6 = ___",
"answer": 23
},
{
"id": 9,
"operand1": 26,
"operand2": 5,
"operator": "-",
"question": "26 - 5 = ___",
"answer": 21
},
{
"id": 10,
"operand1": 18,
"operand2": 8,
"operator": "-",
"question": "18 - 8 = ___",
"answer": 10
},
{
"id": 11,
"operand1": 6,
"operand2": 5,
"operator": "-",
"question": "6 - 5 = ___",
"answer": 1,
"visualIntent": {
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"operation": "subtract",
"items": [
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"crossedCount": 5
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{
"id": 12,
"operand1": 4,
"operand2": 2,
"operator": "-",
"question": "4 - 2 = ___",
"answer": 2,
"visualIntent": {
"layout": "picture-equation",
"operation": "subtract",
"items": [
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"count": 4,
"role": "groupA"
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"crossedCount": 2
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},
{
"id": 13,
"operand1": 29,
"operand2": 19,
"operator": "-",
"question": "29 - 19 = ___",
"answer": 10
},
{
"id": 14,
"operand1": 2,
"operand2": 1,
"operator": "-",
"question": "2 - 1 = ___",
"answer": 1,
"visualIntent": {
"layout": "picture-equation",
"operation": "subtract",
"items": [
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"count": 2,
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"crossedCount": 1
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},
{
"id": 15,
"operand1": 3,
"operand2": 1,
"operator": "-",
"question": "3 - 1 = ___",
"answer": 2,
"visualIntent": {
"layout": "picture-equation",
"operation": "subtract",
"items": [
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"count": 3,
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"crossedCount": 1
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},
{
"id": 16,
"operand1": 27,
"operand2": 17,
"operator": "-",
"question": "27 - 17 = ___",
"answer": 10
},
{
"id": 17,
"operand1": 16,
"operand2": 3,
"operator": "-",
"question": "16 - 3 = ___",
"answer": 13
},
{
"id": 18,
"operand1": 19,
"operand2": 3,
"operator": "-",
"question": "19 - 3 = ___",
"answer": 16
},
{
"id": 19,
"operand1": 14,
"operand2": 4,
"operator": "-",
"question": "14 - 4 = ___",
"answer": 10
},
{
"id": 20,
"operand1": 8,
"operand2": 5,
"operator": "-",
"question": "8 - 5 = ___",
"answer": 3,
"visualIntent": {
"layout": "picture-equation",
"operation": "subtract",
"items": [
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"count": 8,
"role": "groupA"
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"crossedCount": 5
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"layout": {
"columns": 2,
"problemsPerPage": 20
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"_archetype": "form-exercise",
"_generatorId": "arithmetic-generator-v7.2.1"
}Teaching Notes
20
-10
14
-12
13
-1
12
-10
25
-20
27
-23
9
-8
29
-6
26
-5
18
-8
6
-5
4
-2
29
-19
2
-1
3
-1
27
-17
16
-3
19
-3
14
-4
8
-5
Download this free subtraction within 30 math worksheet. Uniquely generated with an answer key — great for homework, practice, or assessment.
Features
- Printable PDF format
- Answer key included
- Multiple difficulty levels
- Classroom and home friendly
How to Use These Worksheets
- Select a within 30 set.
- Print or use on-screen.
- Check answers and practice again.
Tips
- Start with easier sets and move up gradually.
- Practice in short sessions (10–15 minutes).
- Review mistakes and redo similar problems.
Frequently Asked Questions
How do I use this Subtraction Within 30 Math Worksheet 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.