Addition and Subtraction of Integers interactive worksheet | Live ... - Free Printable

Let's solve each of the addition and subtraction problems involving integers step by step.

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Rules to Remember:

1. Adding two positive numbers: Add them normally.
2. Adding two negative numbers: Add their absolute values, result is negative.
3. Adding a positive and a negative number: Subtract the smaller absolute value from the larger one; sign of the result is the same as the number with the larger absolute value.
4. Subtracting a number: Change the sign of the number being subtracted and add.

Now, let’s go through each problem:

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Column 1:

1. $+3 - 4 = 3 - 4 = -1$
2. $-2 - 8 = -10$
3. $3 + 8 = 11$
4. $11 - 15 = -4$
5. $4 + 6 = 10$
6. $+7 - 8 = -1$
7. $-7 - 3 = -10$
8. $6 - 3 = 3$
9. $3 - 3 = 0$
10. $6 - 8 = -2$
11. $23 + 2 = 25$
12. $-7 + 15 = 8$
13. $8 + 22 = 30$

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Column 2:

1. $-2 + 5 = 3$
2. $-9 + 3 = -6$
3. $12 - 9 = 3$
4. $-11 - 15 = -26$
5. $-4 + 9 = 5$
6. $10 + 5 = 15$
7. $+3 - 6 = -3$
8. $-6 + 3 = -3$
9. $3 + 3 = 6$
10. $-8 + 6 = -2$
11. $-23 + 2 = -21$
12. $-7 - 15 = -22$
13. $8 - 22 = -14$

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Column 3:

1. $-3 - 6 = -9$
2. $+5 + 7 = 12$
3. $2 - 5 = -3$
4. $11 + 15 = 26$
5. $12 - 13 = -1$
6. $7 - 9 = -2$
7. $11 + 18 = 29$
8. $-6 - 3 = -9$
9. $-3 - 3 = -6$
10. $-8 - 6 = -14$
11. $23 - 2 = 21$
12. $7 + 15 = 22$
13. $-8 - 22 = -30$

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Column 4:

1. $+10 + 3 = 13$
2. $+1 - 9 = -8$
3. $-5 - 6 = -11$
4. $-11 + 15 = 4$
5. $-2 - 3 = -5$
6. $32 - 41 = -9$
7. $-5 + 12 = 7$
8. $6 + 3 = 9$
9. $-3 + 3 = 0$
10. $-6 + 8 = 2$
11. $-23 - 2 = -25$
12. $7 - 15 = -8$
13. $-8 + 22 = 14$

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✔ Final Answers (organized in grid):

| Column 1 | Column 2 | Column 3 | Column 4 |
|---------|---------|---------|---------|
| -1 | 3 | -9 | 13 |
| -10 | -6 | 12 | -8 |
| 11 | 3 | -3 | -11 |
| -4 | -26 | 26 | 4 |
| 10 | 5 | -1 | -5 |
| -1 | 15 | -2 | -9 |
| -10 | -3 | 29 | 7 |
| 3 | -3 | -9 | 9 |
| 0 | 6 | -6 | 0 |
| -2 | -2 | -14 | 2 |
| 25 | -21 | 21 | -25 |
| 8 | -22 | 22 | -8 |
| 30 | -14 | -30 | 14 |

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✔ Summary of Key Concepts Used:
- When adding or subtracting integers, pay attention to signs.
- Use number line thinking: moving right for positive, left for negative.
- For subtraction: change the sign and add.

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