Fill in the gaps to make the more or less statements correct on this educational worksheet.

Problem Description:

The task involves filling in the gaps to make the given statements correct. Each statement provides a number and describes its relationship (e.g., "3 more than," "5 less than") to another number that needs to be determined.

Solution Approach:

For each statement, we need to perform basic arithmetic operations based on the relationship described:
1. "More than" means addition.
2. "Less than" means subtraction.

We will calculate the missing numbers step by step.

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Step-by-Step Solution:

#### 1. 17 is 3 more than ______
- This means: \( \text{Missing number} + 3 = 17 \).
- Solve for the missing number: \( \text{Missing number} = 17 - 3 = 14 \).
- Answer: 14

#### 2. 15 is 5 less than ______
- This means: \( \text{Missing number} - 5 = 15 \).
- Solve for the missing number: \( \text{Missing number} = 15 + 5 = 20 \).
- Answer: 20

#### 3. 12 is 2 less than ______
- This means: \( \text{Missing number} - 2 = 12 \).
- Solve for the missing number: \( \text{Missing number} = 12 + 2 = 14 \).
- Answer: 14

#### 4. 18 is 5 more than ______
- This means: \( \text{Missing number} + 5 = 18 \).
- Solve for the missing number: \( \text{Missing number} = 18 - 5 = 13 \).
- Answer: 13

#### 5. 16 is 1 less than ______
- This means: \( \text{Missing number} - 1 = 16 \).
- Solve for the missing number: \( \text{Missing number} = 16 + 1 = 17 \).
- Answer: 17

#### 6. 19 is 4 more than ______
- This means: \( \text{Missing number} + 4 = 19 \).
- Solve for the missing number: \( \text{Missing number} = 19 - 4 = 15 \).
- Answer: 15

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Final Answers:

1. 14
2. 20
3. 14
4. 13
5. 17
6. 15

Boxed Final Answer:

\[
\boxed{14, 20, 14, 13, 17, 15}
\]