Prime Time-Investigation 1

What is the definition of a prime number?

• A number with only 1 factor

• A number with only 2 factors

• A number with more than 2 factors

• A number with zero factors

Tags

CCSS.4.OA.B.4

Which number is a factor of 10

• 3
• 4
• 5
• 8

Tags

CCSS.4.OA.B.4

A factor is most similar to a....

• quotient

• product

• divisor

• ninja

Tags

CCSS.4.OA.B.4

How can you prove a number is prime?

• See if it's first name is Optimus.

• If it's the first one.

• Show that it cannot be divided evenly by a number (other than 1 and itself)

• If you add it's proper factors and they equal that number, it's prime.

A composite number is...

• A number with more factors than 1 and itself

• A number with letters in it

• When it's proper factors add to more than the number

• compostable

Tags

CCSS.4.OA.B.4

How can you prove a number is composite?

• It can be subtracted from 0

• It can be divided evenly by numbers other than 1 and itself

• It has more than two digits in it.

• Rainbow Unicorn

Tags

CCSS.4.OA.B.4

Which choice lists all the factors for the number 24?

• 2, 3, 4, 6, 8, 12, 24
• 2, 3, 4, 6, 8, 12, 24, 36
• 1, 2, 3, 4, 6, 8, 12, 24
• 1, 2, 4, 5, 6, 8, 12 ,24

Tags

CCSS.4.OA.B.4

What are all the factors of 40?

• 1,2,4,5,8,12,14,40

• 1,2,3,4,5,8,10

• 1,2,4,5,8,10,20,40

• 1,2,4,5,6,7,8,9,10

What is a multiple?

• a product of one number multiplied by another number.

• The symbol for multiplication

• Two sets of twins

• A number that divides evenly into another number.

Tags

CCSS.6.NS.B.4

A number is divisible by 3 if the digits of the number add up to equal _________

• An even number
• A number that is divisible by 3
• A number that is a multiple of 5
• A number that is divisible by 6