Math worksheet for practicing addition and subtraction to 20 with a cut-and-glue activity.

Let's solve each of the addition and subtraction problems on the worksheet. The goal is to calculate the correct answer for each problem and match it with the numbers provided in the grid at the bottom (which are meant to be cut out and glued in the correct boxes).

---

Step-by-step Solutions:

We'll go through each problem one by one.

#### Row 1:
1. 1 + 7 =
→ 1 + 7 = 8

2. 20 - 19 =
→ 20 - 19 = 1

3. 9 + 7 =
→ 9 + 7 = 16

4. 19 - 14 =
→ 19 - 14 = 5

#### Row 2:
5. 3 + 8 =
→ 3 + 8 = 11

6. 19 - 5 =
→ 19 - 5 = 14

7. 2 + 5 =
→ 2 + 5 = 7

8. 15 - 9 =
→ 15 - 9 = 6

#### Row 3:
9. 7 + 6 =
→ 7 + 6 = 13

10. 16 - 7 =
→ 16 - 7 = 9

11. 10 + 8 =
→ 10 + 8 = 18

12. 14 - 11 =
→ 14 - 11 = 3

#### Row 4:
13. 8 + 9 =
→ 8 + 9 = 17

14. 12 - 10 =
→ 12 - 10 = 2

15. 4 + 6 =
→ 4 + 6 = 10

16. 18 - 3 =
→ 18 - 3 = 15

#### Row 5:
17. 9 + 10 =
→ 9 + 10 = 19

18. 13 - 6 =
→ 13 - 6 = 7

19. 6 + 6 =
→ 6 + 6 = 12

20. 17 - 13 =
→ 17 - 13 = 4

---

Now, let’s list all answers:

| Problem | Answer |
|--------|--------|
| 1+7 | 8 |
| 20-19 | 1 |
| 9+7 | 16 |
| 19-14 | 5 |
| 3+8 | 11 |
| 19-5 | 14 |
| 2+5 | 7 |
| 15-9 | 6 |
| 7+6 | 13 |
| 16-7 | 9 |
| 10+8 | 18 |
| 14-11 | 3 |
| 8+9 | 17 |
| 12-10 | 2 |
| 4+6 | 10 |
| 18-3 | 15 |
| 9+10 | 19 |
| 13-6 | 7 |
| 6+6 | 12 |
| 17-13 | 4 |

---

Matching Answers to Grid:

The grid at the bottom has these numbers:

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

All answers from above are present in this grid.

---

✔ Final Answers (to glue beside each problem):

1. 1 + 7 = → 8
2. 20 - 19 = → 1
3. 9 + 7 = → 16
4. 19 - 14 = → 5
5. 3 + 8 = → 11
6. 19 - 5 = → 14
7. 2 + 5 = → 7
8. 15 - 9 = → 6
9. 7 + 6 = → 13
10. 16 - 7 = → 9
11. 10 + 8 = → 18
12. 14 - 11 = → 3
13. 8 + 9 = → 17
14. 12 - 10 = → 2
15. 4 + 6 = → 10
16. 18 - 3 = → 15
17. 9 + 10 = → 19
18. 13 - 6 = → 7
19. 6 + 6 = → 12
20. 17 - 13 = → 4

---

✔ Summary:

You would cut out the numbers from the grid and glue them into the empty boxes next to each problem using the answers above.

> Note: Some numbers appear more than once (like 7 and 11), so make sure to use the correct number of copies if needed.

Let me know if you'd like a printable version or help formatting it!