Math Problem Statement

Different multiples can share the same factors.

You call these factors 'common factors'.

The multiples 9 and 36 both appear in the 3 times table.

Therefore, 3 is a common factor of 9 and 36.

Which of the following are common factors of 8 and 32?

4

7

8

2

Solution

To find the common factors of 8 and 32, we need to determine which numbers divide both 8 and 32 exactly.

Factors of 8:

The factors of 8 are:
1, 2, 4, 8

Factors of 32:

The factors of 32 are:
1, 2, 4, 8, 16, 32

Common factors of 8 and 32:

The common factors are the numbers that appear in both lists:
1, 2, 4, 8

Now, let’s check the provided options:

  • 4: Yes, 4 is a common factor.
  • 7: No, 7 is not a factor of either 8 or 32.
  • 8: Yes, 8 is a common factor.
  • 2: Yes, 2 is a common factor.

Conclusion:

The common factors of 8 and 32 from the given options are 4, 8, and 2.

Would you like more details or have any further questions?


Here are 5 related questions to explore further:

  1. What are the common factors of 12 and 36?
  2. How do you find the greatest common factor (GCF) of two numbers?
  3. What are the multiples of 32 and 64?
  4. Can a number have more than one common factor with another number?
  5. How do prime numbers affect the list of factors?

Tip: A quick way to find common factors is to list out the factors of each number and compare them!

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Math Problem Analysis

Mathematical Concepts

Factors
Common Factors
Division

Formulas

A number is a factor of another if it divides it exactly with no remainder.

Theorems

Common Factor Theorem: If a number divides two other numbers exactly, it is a common factor.

Suitable Grade Level

Grades 4-6