GCF LCM Prime Factorization

Name the first 8 prime numbers.

• 3, 5, 9,11,13,15,17,19

• 2,3,5,7,11,13,17,19

• 2,3,5,7,9,11,13,17

• 1,2,3,4,5,6,7,8

Tags

CCSS.4.OA.B.4

FInd the composite number.

• 51

• 29

• 19

• 59

Tags

CCSS.4.OA.B.4

What is the LCM of 4 and 18?

• 18

• 36

• 4

• 108

Tags

CCSS.6.NS.B.4

What is the prime factorization of 36?

• 2 x 2 x 3 x 3

• 2 x 3 x 6

• 2 x 2 x 9

• 2 x 3 x 3

Use a factor tree to find the prime factorisation of 168

Find the GCF of 64 and 144

• 8
• 6
• 16
• 2

Tags

CCSS.6.NS.B.4

What is the greatest factor of 28 and 49?

• 1
• 2
• 7
• 12

Tags

CCSS.6.NS.B.4

What is the LCM of 4 and 12? 

• 4
• 8
• 12
• 16

Tags

CCSS.6.NS.B.4

What is the divisibility rule for 3?

• Add up the digits. The sum must be even and divisible by 3.
• The digits must add up to 9.
• The last digit must be a 3.
• Add up the digits. The sum must be divisible by 3.

Tags

CCSS.4.OA.B.4

Find the LCM (Least Common Multiple) of 18 and 24.

• 6

• 72

• 24

• 5

Tags

CCSS.6.NS.B.4