Final Review for Chapter 5

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.

252 is divisible by 9 because:

• The digits add up to 18.

• The sum of the digits is divisible by 9.

• It's even and the sum of the digits is divisible by 3.

• The sum of the digits is even.

The number 70,110 is divisible by...

• 2, 3, 4, 5, 6, 9, 10
• 2, 3, 4, 5, 6, 8, 9, 10
• 2, 3, 5, 6, 9, 10
• 2, 3, 5, 9, 10

Insert the correct digit to make the following number divisible by 3.
60__2

• 1
• 2
• 3
• 5

What is the divisibility rule for 5?

• It is divisible by 2 and 3

• The last digit is a five

• The last digit is five or zero

• The last digit is zero

Which of the following statements is true of this number?

• It is divisible by 3 and 9

• It is divisible by 2, 3, and 6

• It is divisible by 3

• It is prime

What is the divisibility rule of 9?

• The sum of the digits is a number divisible by 3

• The sum of the digits is a number divisible by 9

• The last two digits form a number divisible by 3

• The last digit is zero

• Only A is positive, B is negative.

Match the expressions.

• Closest to zero without being zero

• is undefined

• Farthest left on the number line

• = 0