Math worksheet with division, multiplication, addition, and subtraction problems for practice.

Problem Analysis:

The image contains a series of arithmetic problems involving division, multiplication, addition, and subtraction. We will solve each problem step by step.

---

1. Division Problems:

#### (a) \( 8 \div 112 \)
This is interpreted as \( 112 \div 8 \).

\[
112 \div 8 = 14
\]

#### (b) \( 9 \div 288 \)
This is interpreted as \( 288 \div 9 \).

\[
288 \div 9 = 32
\]

#### (c) \( 12 \div 192 \)
This is interpreted as \( 192 \div 12 \).

\[
192 \div 12 = 16
\]

---

2. Multiplication Problems:

#### (a) \( 165 \times 45 \)

We perform the multiplication step by step:

\[
165 \times 45 = 165 \times (40 + 5) = (165 \times 40) + (165 \times 5)
\]

- \( 165 \times 40 = 6600 \)
- \( 165 \times 5 = 825 \)

Adding these together:

\[
6600 + 825 = 7425
\]

So, \( 165 \times 45 = 7425 \).

#### (b) \( 352 \times 24 \)

We perform the multiplication step by step:

\[
352 \times 24 = 352 \times (20 + 4) = (352 \times 20) + (352 \times 4)
\]

- \( 352 \times 20 = 7040 \)
- \( 352 \times 4 = 1408 \)

Adding these together:

\[
7040 + 1408 = 8448
\]

So, \( 352 \times 24 = 8448 \).

#### (c) \( 287 \times 57 \)

We perform the multiplication step by step:

\[
287 \times 57 = 287 \times (50 + 7) = (287 \times 50) + (287 \times 7)
\]

- \( 287 \times 50 = 14350 \)
- \( 287 \times 7 = 2009 \)

Adding these together:

\[
14350 + 2009 = 16359
\]

So, \( 287 \times 57 = 16359 \).

---

3. Addition Problems:

#### (a) \( 342 + 567 \)

We add the numbers directly:

\[
342 + 567 = 909
\]

#### (b) \( 1432 + 965 \)

We add the numbers directly:

\[
1432 + 965 = 2397
\]

#### (c) \( 1021 + 659 \)

We add the numbers directly:

\[
1021 + 659 = 1680
\]

---

4. Subtraction Problems:

#### (a) \( 958 - 639 \)

We subtract the numbers directly:

\[
958 - 639 = 319
\]

#### (b) \( 506 - 258 \)

We subtract the numbers directly:

\[
506 - 258 = 248
\]

#### (c) \( 786 - 207 \)

We subtract the numbers directly:

\[
786 - 207 = 579
\]

---

Final Answers:

\[
\boxed{
\begin{aligned}
&\text{Division: } 14, 32, 16 \\
&\text{Multiplication: } 7425, 8448, 16359 \\
&\text{Addition: } 909, 2397, 1680 \\
&\text{Subtraction: } 319, 248, 579
\end{aligned}
}
\]