Addition Special Types Mental Math — Set 38
21 + 8 = ___
Show answer
Answer: 29
- Operand1
- 21
- Operand2
- 8
- Operator
- +
52 + 13 = ___
Show answer
Answer: 65
- Operand1
- 52
- Operand2
- 13
- Operator
- +
35 + 21 = ___
Show answer
Answer: 56
- Operand1
- 35
- Operand2
- 21
- Operator
- +
6 + 80 = ___
Show answer
Answer: 86
- Operand1
- 6
- Operand2
- 80
- Operator
- +
34 + 13 = ___
Show answer
Answer: 47
- Operand1
- 34
- Operand2
- 13
- Operator
- +
11 + 43 = ___
Show answer
Answer: 54
- Operand1
- 11
- Operand2
- 43
- Operator
- +
43 + 10 = ___
Show answer
Answer: 53
- Operand1
- 43
- Operand2
- 10
- Operator
- +
4 + 5 = ___
Show answer
Answer: 9
- Operand1
- 4
- Operand2
- 5
- Operator
- +
- VisualIntent
- Layout: picture-equationOperation: addItems: [{"count":4,"role":"groupA"},{"count":5,"role":"groupB"}]
100 + 37 = ___
Show answer
Answer: 137
- Operand1
- 100
- Operand2
- 37
- Operator
- +
30 + 3 = ___
Show answer
Answer: 33
- Operand1
- 30
- Operand2
- 3
- Operator
- +
50 + 31 = ___
Show answer
Answer: 81
- Operand1
- 50
- Operand2
- 31
- Operator
- +
46 + 100 = ___
Show answer
Answer: 146
- Operand1
- 46
- Operand2
- 100
- Operator
- +
2 + 21 = ___
Show answer
Answer: 23
- Operand1
- 2
- Operand2
- 21
- Operator
- +
53 + 34 = ___
Show answer
Answer: 87
- Operand1
- 53
- Operand2
- 34
- Operator
- +
73 + 14 = ___
Show answer
Answer: 87
- Operand1
- 73
- Operand2
- 14
- Operator
- +
9 + 30 = ___
Show answer
Answer: 39
- Operand1
- 9
- Operand2
- 30
- Operator
- +
100 + 36 = ___
Show answer
Answer: 136
- Operand1
- 100
- Operand2
- 36
- Operator
- +
21 + 30 = ___
Show answer
Answer: 51
- Operand1
- 21
- Operand2
- 30
- Operator
- +
6 + 51 = ___
Show answer
Answer: 57
- Operand1
- 6
- Operand2
- 51
- Operator
- +
52 + 43 = ___
Show answer
Answer: 95
- Operand1
- 52
- Operand2
- 43
- Operator
- +
Teaching Notes
Browse free addition worksheets. Each set includes an answer key and covers key skills aligned with Common Core standards.
Features
- Printable PDF format
- Answer key included
- Multiple difficulty levels
- Classroom and home friendly
How to Use These Worksheets
- Select a addition 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
What math skills are covered in these Addition Worksheets?
These worksheets cover addition worksheets skills aligned with Common Core standards for K-3 students. Each set builds procedural fluency and conceptual understanding through varied problem formats.
Are these worksheets free to print?
Yes — all worksheets are completely free with no signup required. Click Print for a clean printout optimized for US Letter paper. PDF download is also available.
What grade level are these addition worksheets for?
These worksheets are designed for Kindergarten through Grade 3 students. Topics match Common Core expectations for each grade level.
Is there an answer key?
Yes — every worksheet includes a complete answer key. Print it separately or view it on screen to check student work quickly.
Can I use these for homeschool?
Absolutely. These worksheets are widely used by homeschool families for structured math practice. The set-number system lets you assign specific worksheets and track progress.