Worksheet for practicing adding and subtracting integers using a number line.

Let's solve each problem step by step using the number line concept. The key idea is:

- Adding a positive number: Move to the right on the number line.
- Adding a negative number: Move to the left on the number line.
- Subtracting a positive number: Move to the left.
- Subtracting a negative number: Move to the right (because subtracting a negative is like adding a positive).

We'll go through each problem:

---

1. $(-3) + 4 = ?$

Start at $-3$, move 4 units to the right:
$-3 \to -2 \to -1 \to 0 \to 1$
✔ Answer: 1

---

2. $(-5) + 7 = ?$

Start at $-5$, move 7 units to the right:
$-5 \to -4 \to -3 \to -2 \to -1 \to 0 \to 1 \to 2$
✔ Answer: 2

---

3. $2 - 7 = ?$

This is the same as $2 + (-7)$

Start at $2$, move 7 units to the left:
$2 \to 1 \to 0 \to -1 \to -2 \to -3 \to -4 \to -5$
✔ Answer: -5

---

4. $3 + 2 = ?$

Start at $3$, move 2 units to the right:
$3 \to 4 \to 5$
✔ Answer: 5

---

5. $3 + (-2) = ?$

Same as $3 - 2$: start at $3$, move 2 left:
$3 \to 2 \to 1$
✔ Answer: 1

---

6. $2 + (-8) = ?$

Same as $2 - 8$: start at $2$, move 8 left:
$2 \to 1 \to 0 \to -1 \to -2 \to -3 \to -4 \to -5 \to -6$
✔ Answer: -6

---

7. $(-4) + 11 = ?$

Start at $-4$, move 11 right:
$-4 \to -3 \to -2 \to -1 \to 0 \to 1 \to 2 \to 3 \to 4 \to 5 \to 6 \to 7$
✔ Answer: 7

---

8. $(-3) + 8 = ?$

Start at $-3$, move 8 right:
$-3 \to -2 \to -1 \to 0 \to 1 \to 2 \to 3 \to 4 \to 5$
✔ Answer: 5

---

9. $(-6) + 12 = ?$

Start at $-6$, move 12 right:
$-6 \to -5 \to -4 \to -3 \to -2 \to -1 \to 0 \to 1 \to 2 \to 3 \to 4 \to 5 \to 6$
✔ Answer: 6

---

10. $(-8) + (-1) = ?$

Same as $-8 - 1$: start at $-8$, move 1 left:
$-8 \to -9$
✔ Answer: -9

---

11. $(-2) - (-3) = ?$

Subtracting a negative = adding a positive:
So, $-2 + 3 = ?$

Start at $-2$, move 3 right:
$-2 \to -1 \to 0 \to 1$
✔ Answer: 1

---

12. $4 + (-8) = ?$

Same as $4 - 8$: start at $4$, move 8 left:
$4 \to 3 \to 2 \to 1 \to 0 \to -1 \to -2 \to -3 \to -4$
✔ Answer: -4

---

13. $3 + (-6) = ?$

Same as $3 - 6$: start at $3$, move 6 left:
$3 \to 2 \to 1 \to 0 \to -1 \to -2 \to -3$
✔ Answer: -3

---

14. $8 + (-6) = ?$

Same as $8 - 6$: start at $8$, move 6 left:
$8 \to 7 \to 6 \to 5 \to 4 \to 3 \to 2$
✔ Answer: 2

---

15. $4 + (-4) = ?$

Same as $4 - 4$: start at $4$, move 4 left:
$4 \to 3 \to 2 \to 1 \to 0$
✔ Answer: 0

---

✔ Final Answers:

1. 1
2. 2
3. -5
4. 5
5. 1
6. -6
7. 7
8. 5
9. 6
10. -9
11. 1
12. -4
13. -3
14. 2
15. 0

Let me know if you'd like this formatted for printing or explained with visual number lines!