GCF Homework/Advanced

What is the GCF of 18 and 24?

• 3

• 6

• 8

• 9

What is the GCF of 4 and 12?

• 3
• 1
• 6
• 4

Which information is being discovered from the ladder method?

• The Simplified Ratio
• The Least Common Multiple
• The Greatest Common Factor
• The Equivalent Fraction Multipliers

Once all the common factors have been divided out using the ladder method, how do you find the Greatest Common Factor?

• Multiply all the common factors from the left side of the ladder.
• Multiply all the numbers on the outside of the ladder.
• Use the numbers at the bottom of the ladder.
• Switch the numbers at the bottom of the ladder.

What is a factor?

• Two numbers that create a quotient.

• Two numbers that create a product.

• Two numbers that create a sum.

• Two numbers that create a difference.

Use a number tree to find the prime factorization of 60

• 5x3x2x2
• 7x6x5
• 5x3x3x2
• 7x5x4

Use a number tree to find the prime factorization of 42

• 4x4x3
• 6x7
• 7x3x2
• 5x4x2

Use a number tree to find the prime factorization of 33

• 33
• 11x3
• 10x3
• 3x3x3x2

Which of these statements is true?

• All numbers have 4 factors.
• 2 is a factor of every number.
• 1 is a factor of every number.
• All odd numbers have an odd number of factors.

All even numbers can be divided by 2. True or false?

• True

• Undecided

• False