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3 and 9 Divisibility

Last updated over 6 years ago

11 questions

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Question 1

1.

The sum of the digits in 153 is 9; therefore, 153 is divisible by 3.

True

False

Question 2

2.

The sum of the digits in 3,425 is 14; therefore, 3,425 is divisible by 3.

True

False

Question 3

3.

The sum of the digits in 496 is 19; therefore, 496 is divisible by 9.

True

False

Question 4

4.

The sum of the digits in 495 is 18; therefore, 495 is divisible by 9.

True

False

Question 5

5.

Post a 3 digit number with no repeating digits that is divisible by 3.

Question 6

6.

Post a 4 digit number with no repeating digits that is divisible by 3.

Question 7

7.

Post a 5 digit number with no repeating digits that is divisible by 3.

Question 8

8.

Post a 3 digit number with no repeating digits that is divisible by 9.

Question 9

9.

Post a 4 digit number with no repeating digits that is divisible by 9.

Question 10

10.

Post a 5 digit number with no repeating digits that is divisible by 9.

Question 11

11.

Are all numbers divisible by 9 also divisible by 3? Explain your answer.