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This worksheet is about integer addition and subtraction, and I can assist you with solving these problems. Let's break it down section by section:

### Section 1: Integer Addition/Subtraction
This section asks you to calculate the results of several integer operations. Let's go through them one by one:

1. \((-25) + (-36)\)
   - This is the addition of two negative numbers: \( (-25) + (-36) = -61 \).

2. \(160 + (-254)\)
   - Here you are adding a positive number to a negative number: \( 160 + (-254) = -94 \).

3. \((-177) + 185\)
   - Here you are adding a negative number to a positive number: \( (-177) + 185 = 8 \).

4. \((-23) + 23\)
   - Adding a negative and its positive counterpart will give you zero: \( (-23) + 23 = 0 \).

### Section 2: Number Line Problem
The question asks: "If point A is at -78 and moves 25 units to the right, which point B does it reach?"

To solve:
- Moving 25 units to the right from -78 means you're adding 25: 
  \[
  -78 + 25 = -53
  \]
- Therefore, the answer is \( b = -53 \). (Option D).

### Section 3: Repeated Subtraction of 5
This exercise asks you to subtract 5 repeatedly starting from 13, filling in the blanks:

- Starting from 13:
  \[
  13 + (-5) = 8
  \]
- Then:
  \[
  8 + (-5) = 3
  \]
- Then:
  \[
  3 + (-5) = -2
  \]
- Finally:
  \[
  -2 + (-5) = -7
  \]

Thus, the sequence is \(13 \rightarrow 8 \rightarrow 3 \rightarrow -2 \rightarrow -7\).

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Would you like any further explanation or details on these solutions?

### Related Questions:
1. How do you handle subtraction of negative numbers?
2. What is the general rule when adding a positive number and a negative number?
3. What is the significance of a number line for visualizing integer addition and subtraction?
4. Why does adding opposites like \((-23) + 23\) result in zero?
5. What is the difference between moving left and right on the number line when adding integers?

### Tip:
When adding two numbers with different signs, subtract their absolute values and give the result the sign of the number with the larger absolute value.

This worksheet involves integer addition and subtraction. There are three main sections: solving integer addition/subtraction problems, moving on a number line, and repeated subtraction by a fixed amount.

This exercise covers solving integer addition and subtraction problems, moving along a number line, and repeated subtraction of a constant number. Learn how to approach integer operations step by step with suitable methods for students in Grades 6-7.

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