Math worksheet for practicing integer operations, including addition and subtraction.

Problem: Solving Integer Operations

The worksheet involves two sections:
1. Finding the sum of integers.
2. Finding the difference of integers.

Let's solve each problem step by step.

---

Section 1: Find the Sum

#### Problem 1: $(-24) + 13 + 15$
- Start with $-24$.
- Add $13$: $-24 + 13 = -11$.
- Add $15$: $-11 + 15 = 4$.
- Answer: $\boxed{4}$

#### Problem 2: $(-4) + 10 + (-23)$
- Start with $-4$.
- Add $10$: $-4 + 10 = 6$.
- Add $-23$: $6 + (-23) = -17$.
- Answer: $\boxed{-17}$

#### Problem 3: $(-10) + 2 + 17$
- Start with $-10$.
- Add $2$: $-10 + 2 = -8$.
- Add $17$: $-8 + 17 = 9$.
- Answer: $\boxed{9}$

#### Problem 4: $5 + (-10) + (-15) + (-8)$
- Start with $5$.
- Add $-10$: $5 + (-10) = -5$.
- Add $-15$: $-5 + (-15) = -20$.
- Add $-8$: $-20 + (-8) = -28$.
- Answer: $\boxed{-28}$

#### Problem 5: $(-13) + 7 + (-5)$
- Start with $-13$.
- Add $7$: $-13 + 7 = -6$.
- Add $-5$: $-6 + (-5) = -11$.
- Answer: $\boxed{-11}$

#### Problem 6: $-4 + (-1) + 2$
- Start with $-4$.
- Add $-1$: $-4 + (-1) = -5$.
- Add $2$: $-5 + 2 = -3$.
- Answer: $\boxed{-3}$

---

Section 2: Find the Difference

#### Problem 7: $27 - (-54)$
- Subtracting a negative is the same as adding the positive: $27 - (-54) = 27 + 54$.
- Add $27 + 54 = 81$.
- Answer: $\boxed{81}$

#### Problem 8: $9 - (-14)$
- Subtracting a negative is the same as adding the positive: $9 - (-14) = 9 + 14$.
- Add $9 + 14 = 23$.
- Answer: $\boxed{23}$

#### Problem 9: $(-99) - (-57)$
- Subtracting a negative is the same as adding the positive: $(-99) - (-57) = -99 + 57$.
- Add $-99 + 57 = -42$.
- Answer: $\boxed{-42}$

#### Problem 10: $(-75) - 14$
- Subtract $14$ from $-75$: $-75 - 14 = -89$.
- Answer: $\boxed{-89}$

#### Problem 11: $(-8) - (-27)$
- Subtracting a negative is the same as adding the positive: $(-8) - (-27) = -8 + 27$.
- Add $-8 + 27 = 19$.
- Answer: $\boxed{19}$

#### Problem 12: $(-64) - (-24)$
- Subtracting a negative is the same as adding the positive: $(-64) - (-24) = -64 + 24$.
- Add $-64 + 24 = -40$.
- Answer: $\boxed{-40}$

---

Final Answers:

1. $\boxed{4}$
2. $\boxed{-17}$
3. $\boxed{9}$
4. $\boxed{-28}$
5. $\boxed{-11}$
6. $\boxed{-3}$
7. $\boxed{81}$
8. $\boxed{23}$
9. $\boxed{-42}$
10. $\boxed{-89}$
11. $\boxed{19}$
12. $\boxed{-40}$

---

Boxed Final Answer:

$$
\boxed{4, -17, 9, -28, -11, -3, 81, 23, -42, -89, 19, -40}
$$