Review for the 1st Quarter Exam

Is 254 divisible by 2?

• Maybe

• Only if it's odd
• No
• Yes, but only for even numbers

Answer explanation

All numbers that ends with 0, 2, 4, 6 and 8 are divisible by 2

How do we know if a number is divisible by 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 is a prime number.
• A number is divisible by 5 if it ends with 2 or 3.

We can tell a number is divisible by 10 if ______.

• its last digit is 0
• its last digit is 5
• it is an even number
• it is a prime number

How can we tell if a number is divisible by 3?

• A number is divisible by 3 if it is even.
• 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 with a 0.
• A number is divisible by 3 if it is a prime number.

Is 648 divisible by 3?

• Yes
• No
• Only if it's a multiple of 5
• Only if it's even

What is the rule if a number is divisible by 6?

• A number is divisible by 6 if it ends in 0.
• A number is divisible by 6 if it is even.
• A number is divisible by 6 if it is a prime number.
• A number is divisible by 6 if it is divisible by both 2 and 3.

Is 900 divisible by 3 and 6?

• Yes
• Only divisible by 6
• Only divisible by 3
• No

When is a number can be divided by 9?

• The sum of the digits of the number is divisible by 9.
• The number ends with a 0.
• The number is even.
• The number is a multiple of 5.

Which statement is true about the divisibility rule for 3 and 9?

• All numbers divisible by 3 are also divisible by 6.
• If a number is divisible by 3, it is also divisible by 9.
• If a number is not divisible by 3, it cannot be divisible by 9.
• If a number is divisible by 9, it is also divisible by 3.

Which of the following numbers is divisible by both 3 and 9?

• Any multiple of 9, such as 9, 18, 27, etc.
• 6
• 15
• 12