Divisibility and Prime Factorization

Which of the following numbers is divisible by 2?

• 573

• 988

• 423

• 59

Tags

CCSS.2.OA.C.3

What is the divisibility rule for 5?

• Number ends in 0,2,4,6,8

• Number ends in 0 or 5

• Sum of the digits is divisible by 3

• Last two digits are divisible by 2

Tags

CCSS.4.OA.B.4

Which number is divisible by 9?

• 648

• 289

• 856

• 443

Tags

CCSS.4.OA.B.4

What numbers is 81 divisible by?

• 3

• 3 and 9

• 2, 3, and 6

• 5

Tags

CCSS.4.OA.B.4

What is the least common multiple (LCM) of 3 and 20?

• 60
• 40
• 20
• 3

Choose the correct list of the first five multiples of 10.

• 1, 10, 20, 30, 40
• 10, 20, 30, 40, 50
• 5, 10, 15, 20, 25
• 10, 30, 40, 50, 60

Which of these is NOT a factor of 36?

• 2
• 8
• 12
• 6

Tags

CCSS.4.OA.B.4

What is the LCM of 2, 4, 6?

• 6
• 12
• 4
• 2

Which list of numbers contains only common multiples of 2 and 7?

• 14, 28, 35, 42

• 14, 28, 42, 70

• 7, 14, 28, 42

• 2, 4, 6, 8

What is the GCF of 24 and 30?

• 2
• 12
• 6
• 3