Divisibility Rules for Numbers 6 to 10

What is the rule for a number to be divisible by 6?

• It must be divisible by 2 and 5

• It must be divisible by 4 and 5

• It must be divisible by 3 and 4

• It must be divisible by 2 and 3

If a number ends in an even digit and the sum of its digits is divisible by 3, which number is it divisible by?

• 4

• 5

• 6

• 7

How do you determine if a number is divisible by 7?

• Double the last digit and add it to the rest of the number

• Double the last digit and subtract it from the rest of the number

• Triple the last digit and add it to the rest of the number

• Triple the last digit and subtract it from the rest of the number

What is the result of 67 minus double the last digit of 672?

• 67

• 63

• 61

• 65

For a number to be divisible by 8, what must be true?

• The last three digits must be divisible by 8

• The last two digits must be divisible by 8

• The sum of the digits must be divisible by 8

• The number must end in 8

If the last three digits of a number are 168, is the number divisible by 8?

• No

• Only if the number is even

• Only if the number is odd

• Yes

What is the rule for a number to be divisible by 9?

• The number must be a multiple of 3

• The last digit must be 9

• The sum of the digits must be divisible by 9

• The number must end in 9

If the sum of the digits of a number is 9, is the number divisible by 9?

• Only if the number is odd

• Yes

• Only if the number is even

• No

What is the rule for a number to be divisible by 10?

• It must be odd

• It must be even

• It must end in 5

• It must end in 0

Which of the following numbers is divisible by 10?

• 1000

• 456

• 123

• 789