GCF/LCM/Prime Factorization

Use a number tree to find the prime factorization of 48

• 4x2x6
• 4x2x2x3
• 3x2x2x2x2
• 12x4

GCF of 99 and 54

• 9
• 3
• 6
• 8

Tags

CCSS.6.NS.B.4

What is the LCM of 3 and 6? 

• 3
• 6
• 12
• 15

Tags

CCSS.6.NS.B.4

What is the GCF and LCM of 12 and 18?

• 6 and 18

• 6 and 36

• 12 and 36

• 3 and 36

Tags

CCSS.6.NS.B.4

Simplify 30/54

• 5/8
• 4/9
• 5/9
• 6/11

Tags

CCSS.6.NS.A.1

CCSS.6.NS.B.4

What is the least common multiple of 5 and 9? 

• 45
• 40 
• 20 
• 50 

Tags

CCSS.6.NS.B.4

A number is divisible by 3 if:

• the sum of its digits is divisible by 3.

• it ends in a 0.

• it is an even number (ends in a 0,2,4,6,8)

• it ends in a 0 or 5.

Tags

CCSS.4.OA.B.4

A number is divisible by 5 if:

• the sum of its digits is divisible by 3.

• it ends in a 0.

• it is an even number (ends in a 0,2,4,6,8)

• it ends in a 0 or 5.

A number is divisible by 2 if:

• the sum of its digits is divisible by 2.

• it ends in a 0.

• it is an even number (ends in a 0,2,4,6,8)

• it ends in a 0 or 5.

A number is divisible by 10 if:

• the sum of its digits is divisible by 3.

• it ends in a 0.

• it is an even number (ends in a 0,2,4,6,8)

• it ends in a 0 or 5.