Prime factorisation

Find ALL FACTORS of 24

• 1, 2, 12, 24

• 1, 2, 8, 24

• 1, 2, 3, 4, 5, 6, 8, 12, 24

• 1, 2, 3, 4, 6, 8, 12, 24

Is 7 a factor of 42?

• yes

• no

Tags

CCSS.6.NS.B.4

1,2,8 and 16 are all factors of 16. Which factor is missing

• 3
• 4
• 5
• 6

Tags

CCSS.4.OA.B.4

Which of the following numbers is a factor of 6?

• 12
• 2
• 8
• 10

Tags

CCSS.4.OA.B.4

Which lists all the factors of 15?

• 1, 7, 8, 15
• 1, 15
• 1, 3, 5, 15
• 3, 5, 15

Only even prime number?

• 0
• 2
• 4
• 6

Tags

CCSS.4.OA.B.4

Prime numbers are infinite?

• Yes
• No
• Maybe
• Impossible

Why is 1 neither prime or composite?

• It only has one factor
• It has three factors
• It isn't a number
• It is too close to 2

Tags

CCSS.4.OA.B.4

What is a prime number?

• A number with 1 factor
• A number with 2 factors
• A number with 3 factors
• 2 factors (1 and itself)

Write all the prime numbers less than 10.