Addition and Subtraction Worksheet: Easy Fact Families
Fact Family Worksheets: Addition and Subtraction
An Addition and Subtraction Worksheet helps children understand how numbers work together through fact families and simple number relationships. Instead of learning one math fact at a time, students learn four related facts from the same three numbers. Therefore, children build stronger number sense, improve mental math, and solve problems with greater confidence.
For example, the numbers 3, 5, and 8 make one fact family.
Addition
- 3 + 5 = 8
- 5 + 3 = 8
Subtraction
- 8 − 3 = 5
- 8 − 5 = 3
As a result, students discover that addition and subtraction are connected. Moreover, they remember facts faster because they practice them as a family instead of separately.
Worksheet 1: Complete the Fact Family
Use the three numbers to write 2 addition facts and 2 subtraction facts.
Set 1
Numbers: 2, 6, 8
Addition
- ____ + ____ = ____
- ____ + ____ = ____
Subtraction
- ____ − ____ = ____
- ____ − ____ = ____
Set 2
Numbers: 4, 3, 7
Addition
- ____ + ____ = ____
- ____ + ____ = ____
Subtraction
- ____ − ____ = ____
- ____ − ____ = ____
Set 3
Numbers: 5, 1, 6
Addition
- ____ + ____ = ____
- ____ + ____ = ____
Subtraction
- ____ − ____ = ____
- ____ − ____ = ____
Set 4
Numbers: 7, 2, 9
Addition
- ____ + ____ = ____
- ____ + ____ = ____
Subtraction
- ____ − ____ = ____
- ____ − ____ = ____
Set 5
Numbers: 8, 4, 12
Addition
- ____ + ____ = ____
- ____ + ____ = ____
Subtraction
- ____ − ____ = ____
- ____ − ____ = ____
Worksheet 2: Number Triangle Practice
Look at each number family. Then, write the four matching equations.
10
/ \
7 3Addition
Subtraction
13
/ \
8 5Addition
Subtraction
15
/ \
9 6Addition
Subtraction
18
/ \
11 7Addition
Subtraction
Worksheet 3: Fill in the Missing Number
Choose the correct number.
- 4 + ___ = 9
- 9 − 4 = ___
- ___ + 6 = 10
- 10 − ___ = 6
- 5 + ___ = 11
- 11 − 5 = ___
- ___ + 8 = 15
- 15 − 8 = ___
- 9 + ___ = 16
- 16 − 7 = ___
Worksheet 4: Circle the Correct Answer
- 3 + 4 =
○ 6
○ 7
○ 8
- 9 − 5 =
○ 3
○ 4
○ 5
- 8 + 6 =
○ 13
○ 14
○ 15
- 15 − 9 =
○ 5
○ 6
○ 7
- 10 + 5 =
○ 14
○ 15
○ 16
- 18 − 8 =
○ 8
○ 9
○ 10
Worksheet 5: Match the Fact Family
Draw a line to match each addition fact with its subtraction fact.
| Addition | Subtraction |
|---|---|
| 4 + 5 = 9 | 10 − 6 = 4 |
| 6 + 4 = 10 | 9 − 4 = 5 |
| 3 + 8 = 11 | 11 − 8 = 3 |
| 7 + 5 = 12 | 12 − 7 = 5 |
| 2 + 9 = 11 | 11 − 2 = 9 |
Quick Practice
Write the other three facts.
Example
6 + 2 = 8
- 9 + 1 = 10
- 7 + 6 = 13
- 5 + 8 = 13
- 12 − 7 = 5
14 − 6 = 8
Worksheet 6: Write the Complete Fact Family
Use each group of numbers to write two addition facts and two subtraction facts.
Set 1
Numbers: 6, 8, 14
Addition
- _____ + _____ = _____
- _____ + _____ = _____
Subtraction
- _____ − _____ = _____
- _____ − _____ = _____
Set 2
Numbers: 9, 7, 16
Addition
- _____ + _____ = _____
- _____ + _____ = _____
Subtraction
- _____ − _____ = _____
- _____ − _____ = _____
Set 3
Numbers: 10, 5, 15
Addition
- _____ + _____ = _____
- _____ + _____ = _____
Subtraction
- _____ − _____ = _____
- _____ − _____ = _____
Set 4
Numbers: 12, 6, 18
Addition
- _____ + _____ = _____
- _____ + _____ = _____
Subtraction
- _____ − _____ = _____
- _____ − _____ = _____
Worksheet 7: Fill in the Missing Number
Complete each equation.
- 8 + ____ = 13
- 13 − 8 = ____
- ____ + 9 = 15
- 15 − ____ = 9
- 11 + ____ = 18
- 18 − 11 = ____
- ____ + 7 = 17
- 17 − 10 = ____
- 14 − ____ = 5
- ____ + 6 = 16
- 20 − 9 = ____
- ____ + 8 = 19
Worksheet 8: Number Bond Practice
Look at the whole number and the two parts. Then, write all four facts.
Number Bond
17
/ \
9 8Addition
Subtraction
19
/ \
12 7Addition
Subtraction
21
/ \
15 6Addition
Subtraction
Worksheet 9: Choose the Correct Answer
- 12 + 5 =
☐ 15
☐ 16
☐ 17
- 17 − 12 =
☐ 4
☐ 5
☐ 6
- 14 + 6 =
☐ 18
☐ 19
☐ 20
- 20 − 14 =
☐ 5
☐ 6
☐ 7
- 13 + 8 =
☐ 20
☐ 21
☐ 22
- 21 − 8 =
☐ 12
☐ 13
☐ 14
- 16 + 9 =
☐ 24
☐ 25
☐ 26
- 25 − 16 =
☐ 8
☐ 9
☐ 10
Worksheet 10: Complete the Fact Family Table
| Numbers | Addition 1 | Addition 2 | Subtraction 1 | Subtraction 2 |
|---|---|---|---|---|
| 4, 11, 15 | ______ | ______ | ______ | ______ |
| 6, 13, 19 | ______ | ______ | ______ | ______ |
| 8, 9, 17 | ______ | ______ | ______ | ______ |
| 5, 15, 20 | ______ | ______ | ______ | ______ |
| 12, 8, 20 | ______ | ______ | ______ | ______ |
Worksheet 11: Word Problems
Read each problem carefully. Then, write the addition and subtraction fact family.
Problem 1
Emma has 7 red pencils and 5 blue pencils.
She has 12 pencils in all.
Write the fact family.
Addition
Subtraction
Problem 2
Liam picks 9 apples in the morning and 8 apples in the afternoon.
He picks 17 apples altogether.
Write the fact family.
Addition
Subtraction
Problem 3
A toy box holds 15 toys.
Six toys are cars.
The rest are balls.
Complete the fact family.
Addition
Subtraction
Challenge Practice (Grade 4–5)
Complete every fact family.
Numbers: 13, 11, 24
Numbers: 16, 8, 24
Numbers: 18, 9, 27
Numbers: 14, 15, 29
Numbers: 25, 7, 32
For each set, write:
- Addition Fact 1
- Addition Fact 2
- Subtraction Fact 1
- Subtraction Fact 2
Math Tip
Always remember these simple steps:
- Find the three numbers.
- The largest number is the total.
- Write two addition equations.
- Then, write two subtraction equations.
- Finally, check every answer to make sure the numbers belong to the same fact family.
This method helps students in Grades 1, and in Grade 2 with addition and subtraction, and in Grades 3–5 improve addition, subtraction, number sense, and mental math skills through regular practice.
Mixed Fact Family Review Worksheet
Complete each fact family by writing two addition facts and two subtraction facts.
Set 1
Numbers: 8, 10, 18
Addition
Subtraction
Set 2
Numbers: 7, 14, 21
Addition
Subtraction
Set 3
Numbers: 9, 16, 25
Addition
Subtraction
Set 4
Numbers: 15, 11, 26
Addition
Subtraction
Set 5
Numbers: 18, 12, 30
Addition
Subtraction
Find the Missing Number
Fill in each blank.
- ____ + 9 = 20
- 20 − 11 = ____
- 13 + ____ = 21
- 21 − 8 = ____
- ____ + 14 = 29
- 29 − 15 = ____
- 17 + ____ = 31
- 31 − 17 = ____
- ____ + 16 = 28
- 28 − 12 = ____
True or False
Write True or False.
- 6 + 8 = 14 and 14 − 8 = 6 belong to the same fact family.
- 5 + 7 = 13 belongs to the fact family of 5, 7, and 12.
- Every fact family has two addition facts and two subtraction facts.
- The largest number is usually the total in a fact family.
- Addition and subtraction are related operations.
Answer Key
Worksheet Review
8, 10, 18
- 8 + 10 = 18
- 10 + 8 = 18
- 18 − 8 = 10
- 18 − 10 = 8
7, 14, 21
- 7 + 14 = 21
- 14 + 7 = 21
- 21 − 7 = 14
- 21 − 14 = 7
9, 16, 25
- 9 + 16 = 25
- 16 + 9 = 25
- 25 − 9 = 16
- 25 − 16 = 9
15, 11, 26
- 15 + 11 = 26
- 11 + 15 = 26
- 26 − 15 = 11
- 26 − 11 = 15
18, 12, 30
- 18 + 12 = 30
- 12 + 18 = 30
- 30 − 18 = 12
- 30 − 12 = 18
Missing Numbers
- 11
- 9
- 8
- 13
- 15
- 14
- 14
- 14
- 12
- 16
True or False
- True
- False
- True
- True
- True
Practice Tips
Practice one fact family every day. First, find the largest number. Next, write two addition facts. Then, write two subtraction facts. Finally, check that every equation uses the same three numbers. Regular practice helps students improve speed, accuracy, and confidence in addition and subtraction.
For Parents and Teachers
Encourage children to say each fact family aloud while writing the equations. Flash cards, number triangles, counters, and small objects can make learning more enjoyable. As students become confident, gradually introduce larger numbers to strengthen mental math and problem-solving skills.
Conclusion
Fact family worksheets are an excellent way to build strong addition and subtraction skills for students in Grades 1 through 5. By practicing related equations together, children recognize number patterns, improve calculation speed, and develop confidence in mathematics. Regular worksheet practice, combined with simple review activities, creates a solid foundation for future math topics such as multiplication, division, fractions, and algebra. Keep practicing, check every answer carefully, and enjoy learning with fact families every day.
