Divisibility rules

What numbers is 70,110 divisible by?

• 2, 3, 5, 6, 9, and 10

• 1, 2, 4, and 8

• 3, 7, 11, and 13

• 5, 15, 25, and 35

Tags

CCSS.4.NBT.B.6

What is the divisibility rule for 10?

• A number is divisible by 10 if its last digit is 0.

• A number is divisible by 10 if it is even.

• A number is divisible by 10 if it ends with a 5.

• A number is divisible by 10 if the sum of its digits is 10.

Tags

CCSS.4.OA.B.4

Can a number be divisible by multiple divisors?

• No, a number can only be divisible by one divisor at a time.

• Yes, a number can be divisible by multiple divisors simultaneously.

• Only prime numbers can be divisible by multiple divisors.

• A number can be divisible by multiple divisors, but only if they are all even.

Tags

CCSS.4.OA.B.4

What is the divisibility rule for 5?

• A number is divisible by 5 if its last digit is 0 or 5.

• A number is divisible by 5 if it is even.

• A number is divisible by 5 if it ends with 2 or 3.

• A number is divisible by 5 if the sum of its digits is 5.

Tags

CCSS.4.OA.B.4

What is the first step to determine if a number is divisible by 6?

• Check if the number is divisible by both 2 and 3.

• Check if the number is even.

• Check if the number is a multiple of 5.

• Check if the number is greater than 10.

Tags

CCSS.4.OA.B.4

What is the divisibility rule for 2?

• A number is divisible by 2 if its last digit is even (0, 2, 4, 6, or 8).

• A number is divisible by 2 if it is an even number only.

• A number is divisible by 2 if it ends with a 1 or 3.

• A number is divisible by 2 if the sum of its digits is even.

Tags

CCSS.4.OA.B.4

What is the divisibility rule for 6?

• A number is divisible by 6 if it is divisible by 2 and 4.

• A number is divisible by 6 if it is divisible by 2 and 3.

• A number is divisible by 6 if it is divisible by 3 and 5.

• A number is divisible by 6 if it is divisible by 1 and 6.

Tags

CCSS.4.OA.B.4

What is the divisibility rule for 9?

• A number is divisible by 9 if the sum of its digits is divisible by 9.

• A number is divisible by 9 if it ends in 0 or 5.

• A number is divisible by 9 if it is an even number.

• A number is divisible by 9 if it is a multiple of 3.

Tags

CCSS.4.OA.B.4

What is the relationship between divisibility rules and prime factorization?

• Divisibility rules are completely unrelated to prime factorization.

• Divisibility rules can often be derived from the prime factorization of numbers, as they reveal the necessary factors for divisibility.

• Divisibility rules only apply to composite numbers and not to prime numbers.

• Divisibility rules are based solely on the last digit of a number.

Tags

CCSS.4.OA.B.4

What is the divisibility rule for 3?

• A number is divisible by 3 if the sum of its digits is divisible by 3.

• A number is divisible by 3 if it ends in 0 or 5.

• A number is divisible by 3 if it is an even number.

• A number is divisible by 3 if the product of its digits is divisible by 3.

Tags

CCSS.3.OA.D.9