Add & subtract - all facts (horizontal) worksheets | Worsheets library - Free Printable

Let's solve the Addition and Subtraction Facts worksheet step by step. This is a math facts practice worksheet designed to reinforce basic addition and subtraction skills.

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Worksheet: Addition and Subtraction Facts

We'll go through each problem one by one and compute the correct answer.

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#### Row 1
1. $ 16 - 12 = 4 $
2. $ 10 + 5 = 15 $
3. $ 9 + 9 = 18 $
4. $ 4 - 3 = 1 $

#### Row 2
5. $ 12 - 3 = 9 $
6. $ 23 - 12 = 11 $
7. $ 4 + 5 = 9 $
8. $ 22 - 11 = 11 $

#### Row 3
9. $ 8 + 3 = 11 $
10. $ 21 - 10 = 11 $
11. $ 12 + 7 = 19 $
12. $ 22 - 12 = 10 $

#### Row 4
13. $ 5 + 4 = 9 $
14. $ 7 - 6 = 1 $
15. $ 4 + 7 = 11 $
16. $ 5 + 7 = 12 $

#### Row 5
17. $ 10 + 3 = 13 $
18. $ 9 + 7 = 16 $
19. $ 2 + 2 = 4 $
20. $ 11 + 6 = 17 $

#### Row 6
21. $ 6 - 4 = 2 $
22. $ 5 - 4 = 1 $
23. $ 9 - 3 = 6 $
24. $ 10 + 6 = 16 $

#### Row 7
25. $ 6 + 12 = 18 $
26. $ 15 - 11 = 4 $
27. $ 16 - 11 = 5 $
28. $ 23 - 11 = 12 $

#### Row 8
29. $ 11 - 4 = 7 $
30. $ 20 - 8 = 12 $
31. $ 5 + 9 = 14 $
32. $ 9 - 6 = 3 $

#### Row 9
33. $ 6 - 2 = 4 $
34. $ 11 - 6 = 5 $
35. $ 8 + 7 = 15 $
36. $ 1 + 6 = 7 $

#### Row 10
37. $ 4 + 8 = 12 $
38. $ 5 + 6 = 11 $
39. $ 3 + 10 = 13 $
40. $ 13 - 11 = 2 $

#### Row 11
41. $ 7 + 1 = 8 $
42. $ 9 + 11 = 20 $
43. $ 8 - 2 = 6 $
44. $ 6 + 5 = 11 $

#### Row 12
45. $ 21 - 11 = 10 $
46. $ 17 - 6 = 11 $
47. $ 20 - 12 = 8 $
48. $ 9 + 8 = 17 $

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✔ Final Answers (in order):

```
4, 15, 18, 1,
9, 11, 9, 11,
11, 11, 19, 10,
9, 1, 11, 12,
13, 16, 4, 17,
2, 1, 6, 16,
18, 4, 5, 12,
7, 12, 14, 3,
4, 5, 15, 7,
12, 11, 13, 2,
8, 20, 6, 11,
10, 11, 8, 17
```

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📌 Explanation:

This worksheet helps students practice basic arithmetic facts, which are essential for building fluency in mental math. Each problem involves either:

- Addition: Combining two numbers.
- Subtraction: Finding the difference between two numbers.

These types of problems are typically used in early elementary education (grades K–2) to develop number sense and quick recall of math facts.

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💡 Tips for Students:

- Practice regularly to build speed and accuracy.
- Use number lines or fingers if needed initially.
- Check your work after solving each row.

Let me know if you'd like this formatted as a printable answer key!