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Complete the factorization of numbers into prime factors using tree diagrams.

A math worksheet showing factor trees for numbers 45, 24, 36, and 40, with instructions to complete factorization into prime numbers.

A math worksheet showing factor trees for numbers 45, 24, 36, and 40, with instructions to complete factorization into prime numbers.

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Show Answer Key & Explanations Step-by-step solution for: Prime Factorization exercise
To solve the problem, we need to complete the factorization of the given numbers (45, 24, 36, and 40) into their prime factors. Let's go through each number step by step.

---

1. Factorization of 45


The number 45 is already partially factored as:
```
45
/ \
5 9
/ \
3 3
```
- The prime factors are: \( 5 \times 3 \times 3 \).

Thus, the complete factorization of 45 is:
\[
45 = 5 \times 3 \times 3
\]

---

2. Factorization of 24


The number 24 is partially factored as:
```
24
/ \
8 3
/ \
4 2
/ \
2 2
```
- The prime factors are: \( 3 \times 2 \times 2 \times 2 \).

Thus, the complete factorization of 24 is:
\[
24 = 3 \times 2 \times 2 \times 2
\]

---

3. Factorization of 36


The number 36 is partially factored as:
```
36
/ \
6 6
/ \ / \
2 3 2 3
```
- The prime factors are: \( 2 \times 3 \times 2 \times 3 \).

Thus, the complete factorization of 36 is:
\[
36 = 2 \times 3 \times 2 \times 3
\]

---

4. Factorization of 40


The number 40 is partially factored as:
```
40
/ \
5 8
/ \
4 2
/ \
2 2
```
- The prime factors are: \( 5 \times 2 \times 2 \times 2 \).

Thus, the complete factorization of 40 is:
\[
40 = 5 \times 2 \times 2 \times 2
\]

---

Final Answers


Putting it all together, the complete factorizations are:
\[
\boxed{
45 = 5 \times 3 \times 3, \quad
24 = 3 \times 2 \times 2 \times 2, \quad
36 = 2 \times 3 \times 2 \times 3, \quad
40 = 5 \times 2 \times 2 \times 2
}
\]
Parent Tip: Review the logic above to help your child master the concept of prime factorization worksheet 5th grade.
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