Workbook Detail
Addition Special Types Missing Addend — Set 21
51 + 25 = ___
Show answer
Answer: 76
- Operand1
- 51
- Operand2
- 25
- Operator
- +
40 + 44 = ___
Show answer
Answer: 84
- Operand1
- 40
- Operand2
- 44
- Operator
- +
24 + 43 = ___
Show answer
Answer: 67
- Operand1
- 24
- Operand2
- 43
- Operator
- +
34 + 64 = ___
Show answer
Answer: 98
- Operand1
- 34
- Operand2
- 64
- Operator
- +
14 + 33 = ___
Show answer
Answer: 47
- Operand1
- 14
- Operand2
- 33
- Operator
- +
43 + 24 = ___
Show answer
Answer: 67
- Operand1
- 43
- Operand2
- 24
- Operator
- +
80 + 17 = ___
Show answer
Answer: 97
- Operand1
- 80
- Operand2
- 17
- Operator
- +
20 + 27 = ___
Show answer
Answer: 47
- Operand1
- 20
- Operand2
- 27
- Operator
- +
40 + 43 = ___
Show answer
Answer: 83
- Operand1
- 40
- Operand2
- 43
- Operator
- +
34 + 54 = ___
Show answer
Answer: 88
- Operand1
- 34
- Operand2
- 54
- Operator
- +
41 + 45 = ___
Show answer
Answer: 86
- Operand1
- 41
- Operand2
- 45
- Operator
- +
61 + 31 = ___
Show answer
Answer: 92
- Operand1
- 61
- Operand2
- 31
- Operator
- +
26 + 63 = ___
Show answer
Answer: 89
- Operand1
- 26
- Operand2
- 63
- Operator
- +
47 + 12 = ___
Show answer
Answer: 59
- Operand1
- 47
- Operand2
- 12
- Operator
- +
12 + 71 = ___
Show answer
Answer: 83
- Operand1
- 12
- Operand2
- 71
- Operator
- +
12 + 35 = ___
Show answer
Answer: 47
- Operand1
- 12
- Operand2
- 35
- Operator
- +
41 + 26 = ___
Show answer
Answer: 67
- Operand1
- 41
- Operand2
- 26
- Operator
- +
14 + 52 = ___
Show answer
Answer: 66
- Operand1
- 14
- Operand2
- 52
- Operator
- +
11 + 26 = ___
Show answer
Answer: 37
- Operand1
- 11
- Operand2
- 26
- Operator
- +
28 + 71 = ___
Show answer
Answer: 99
- Operand1
- 28
- Operand2
- 71
- Operator
- +
Teaching Notes
Download this free addition missing addends to 20 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 missing addends to 20 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 Addition Missing Addends To 20 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.