Addition and Subtraction math worksheet for elementary students with practice problems.

Problem Analysis:

The image contains two sections:
1. Addition Problems: Each row involves adding a specific number to a given starting number.
2. Subtraction Problems: A grid of subtraction problems where the results need to be calculated.

We will solve each section step by step.

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Section 1: Addition Problems

#### Row 1:
- 30 + 10:
\( 30 + 10 = 40 \)

- 25 + 11:
\( 25 + 11 = 36 \)

- 43 + 12:
\( 43 + 12 = 55 \)

- 14 + 14:
\( 14 + 14 = 28 \)

#### Row 2:
- 42 + 12:
\( 42 + 12 = 54 \)

- 23 + 14:
\( 23 + 14 = 37 \)

- 37 + 22:
\( 37 + 22 = 59 \)

- 52 + 15:
\( 52 + 15 = 67 \)

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Section 2: Subtraction Problems

#### Grid of Subtraction Problems:
1. 40 - 20:
\( 40 - 20 = 20 \)

2. 25 - 22:
\( 25 - 22 = 3 \)

3. 30 - 15:
\( 30 - 15 = 15 \)

4. 45 - 15:
\( 45 - 15 = 30 \)

5. 27 - 17:
\( 27 - 17 = 10 \)

6. 52 - 12:
\( 52 - 12 = 40 \)

7. 14 - 14:
\( 14 - 14 = 0 \)

8. 67 - 37:
\( 67 - 37 = 30 \)

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Final Answers:

#### Addition Results:
- Row 1: \( 40, 36, 55, 28 \)
- Row 2: \( 54, 37, 59, 67 \)

#### Subtraction Results:
- Grid: \( 20, 3, 15, 30, 10, 40, 0, 30 \)

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Boxed Final Answer:

\[
\boxed{
\begin{array}{cccc}
\text{Addition Results:} & 40 & 36 & 55 & 28 \\
& 54 & 37 & 59 & 67 \\
\text{Subtraction Results:} & 20 & 3 & 15 & 30 & 10 & 40 & 0 & 30
\end{array}
}
\]