Addition Special Types Mental Math — Set 99
23 + 72 = ___
Show answer
Answer: 95
- Operand1
- 23
- Operand2
- 72
- Operator
- +
33 + 66 = ___
Show answer
Answer: 99
- Operand1
- 33
- Operand2
- 66
- Operator
- +
12 + 44 = ___
Show answer
Answer: 56
- Operand1
- 12
- Operand2
- 44
- Operator
- +
45 + 10 = ___
Show answer
Answer: 55
- Operand1
- 45
- Operand2
- 10
- Operator
- +
71 + 10 = ___
Show answer
Answer: 81
- Operand1
- 71
- Operand2
- 10
- Operator
- +
11 + 28 = ___
Show answer
Answer: 39
- Operand1
- 11
- Operand2
- 28
- Operator
- +
6 + 12 = ___
Show answer
Answer: 18
- Operand1
- 6
- Operand2
- 12
- Operator
- +
10 + 66 = ___
Show answer
Answer: 76
- Operand1
- 10
- Operand2
- 66
- Operator
- +
14 + 85 = ___
Show answer
Answer: 99
- Operand1
- 14
- Operand2
- 85
- Operator
- +
4 + 93 = ___
Show answer
Answer: 97
- Operand1
- 4
- Operand2
- 93
- Operator
- +
2 + 40 = ___
Show answer
Answer: 42
- Operand1
- 2
- Operand2
- 40
- Operator
- +
11 + 31 = ___
Show answer
Answer: 42
- Operand1
- 11
- Operand2
- 31
- Operator
- +
35 + 42 = ___
Show answer
Answer: 77
- Operand1
- 35
- Operand2
- 42
- Operator
- +
51 + 27 = ___
Show answer
Answer: 78
- Operand1
- 51
- Operand2
- 27
- Operator
- +
42 + 14 = ___
Show answer
Answer: 56
- Operand1
- 42
- Operand2
- 14
- Operator
- +
24 + 74 = ___
Show answer
Answer: 98
- Operand1
- 24
- Operand2
- 74
- Operator
- +
64 + 31 = ___
Show answer
Answer: 95
- Operand1
- 64
- Operand2
- 31
- Operator
- +
32 + 56 = ___
Show answer
Answer: 88
- Operand1
- 32
- Operand2
- 56
- Operator
- +
11 + 22 = ___
Show answer
Answer: 33
- Operand1
- 11
- Operand2
- 22
- Operator
- +
46 + 12 = ___
Show answer
Answer: 58
- Operand1
- 46
- Operand2
- 12
- 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.