Prime and Composite Numbers Color By Number Activity Worksheet 4 ... - Free Printable

Problem Overview:

The task is to determine whether each number in the image is prime or composite and then color the corresponding space accordingly:
- Pink: Prime number
- Blue: Composite number

Definitions:

- Prime Number: A number greater than 1 that has no positive divisors other than 1 and itself.
- Composite Number: A number greater than 1 that has at least one positive divisor other than 1 and itself.

Numbers in the Image:

The numbers are:
```
31, 15, 27, 33, 11, 5,
37, 15, 3, 7, 9, 42,
50, 14, 29, 4, 13, 17,
2, 25, 16, 41, 21
```

Step-by-Step Solution:

#### 1. 31
- Divisors: 1, 31
- Prime

#### 2. 15
- Divisors: 1, 3, 5, 15
- Composite

#### 3. 27
- Divisors: 1, 3, 9, 27
- Composite

#### 4. 33
- Divisors: 1, 3, 11, 33
- Composite

#### 5. 11
- Divisors: 1, 11
- Prime

#### 6. 5
- Divisors: 1, 5
- Prime

#### 7. 37
- Divisors: 1, 37
- Prime

#### 8. 3
- Divisors: 1, 3
- Prime

#### 9. 7
- Divisors: 1, 7
- Prime

#### 10. 9
- Divisors: 1, 3, 9
- Composite

#### 11. 42
- Divisors: 1, 2, 3, 6, 7, 14, 21, 42
- Composite

#### 12. 50
- Divisors: 1, 2, 5, 10, 25, 50
- Composite

#### 13. 14
- Divisors: 1, 2, 7, 14
- Composite

#### 14. 29
- Divisors: 1, 29
- Prime

#### 15. 4
- Divisors: 1, 2, 4
- Composite

#### 16. 13
- Divisors: 1, 13
- Prime

#### 17. 17
- Divisors: 1, 17
- Prime

#### 18. 2
- Divisors: 1, 2
- Prime

#### 19. 25
- Divisors: 1, 5, 25
- Composite

#### 20. 16
- Divisors: 1, 2, 4, 8, 16
- Composite

#### 21. 41
- Divisors: 1, 41
- Prime

#### 22. 21
- Divisors: 1, 3, 7, 21
- Composite

Final Coloring Guide:

- Pink (Prime): 31, 11, 5, 37, 3, 7, 29, 13, 17, 2, 41
- Blue (Composite): 15, 27, 33, 15, 9, 42, 50, 14, 4, 25, 16, 21

Final Answer:

\[
\boxed{
\text{Pink: 31, 11, 5, 37, 3, 7, 29, 13, 17, 2, 41}
}
\]
\[
\boxed{
\text{Blue: 15, 27, 33, 15, 9, 42, 50, 14, 4, 25, 16, 21}
}
\]