Exploring Factors, Prime and Composite Numbers

The video tutorial covers factors and multiples, starting with the definition of a factor as a number that divides another number without leaving a remainder. It explains prime numbers, which have only two factors, and composite numbers, which have more than two. Examples are provided to illustrate these concepts, including numbers like 30, 24, 41, 51, 89, and 121. The tutorial emphasizes the importance of understanding these concepts and encourages practice using available Quizlet sets.

What is a factor?

• A number that is greater than another number.

• A number that is less than another number.

• A number that is the product of two smaller numbers.

• A number that can be divided by another number without leaving a remainder.

Tags

CCSS.4.OA.B.4

Which of the following is NOT a factor of 30?

• 6

• 5

• 4

• 1

Tags

CCSS.4.OA.B.4

What is a prime number?

• A number that is divisible by 3.

• A number that has more than two factors.

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

• A number that is divisible by 2.

Tags

CCSS.4.OA.B.4

Which of the following numbers is prime?

• 41

• 24

• 30

• 51

Tags

CCSS.4.OA.B.4

Which of the following numbers is composite?

• 51

• 41

• 5

• 89

Tags

CCSS.4.OA.B.4

What are the factors of 24?

• 1, 2, 3, 6, 12, 24

• 1, 3, 5, 15, 24

• 1, 2, 4, 8, 16, 24

• 1, 2, 3, 4, 6, 8, 12, 24

Tags

CCSS.4.OA.B.4

Which of the following is NOT a factor of 41?

• 2

• 41

• None of the above

• 1

Tags

CCSS.4.OA.B.4

Which of the following pairs of numbers multiply to give 51?

• 2 and 25.5

• Both 1 and 3

• 1 and 51

• 3 and 17

Tags

CCSS.4.OA.B.4

What is the product of 11 and 11?

• 111

• 121

• 131

• 141

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CCSS.4.NBT.B.5

Which of the following numbers is composite?

• 41

• 89

• None of the above

• 121

Tags

CCSS.4.OA.B.4