GCF-Review

Greatest Common Factor-Review

GCF Definition

The highest number that divides exactly into two or more numbers.

It is the "greatest" thing for simplifying fractions!

Khan Academy

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Multiple Choice

List all the factors of 12

• 1x12, 2x6, 3x4

• 1x12, 2x4

• 1x12

• 1x12, 2x6, 3x5

Multiple Choice

What does Prime Number mean?

• A factor that two or more numbers have in common.

• The whole numbers that are multiplied together to get a product.

• The expression of a number as the product of its prime factors

• A whole number that has exactly two different factors: 1 and itself.

Multiple Choice

What does Greatest Common Factor mean?

• A whole number that can be multiplied to make a product

• The largest factor two or more numbers have in common

• A number who's factors is only 1 and itself

Multiple Choice

Jane has 18 juice boxes, 24 bags of peanuts and 36 apples.  She wants to make snack bags with the same number of each thing in each bag. What is the greatest number of snack bags Jane can make?

• 4
• 6
• 8
• 10

Multiple Choice

GCF of 24 and 48

• 3
• 6
• 12
• 24

Multiple Choice

GCF of 32 and 40

• 2
• 4
• 6
• 8

Multiple Choice

GCF of 12 and 18

• 3
• 4
• 6
• 2