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# Divisibility Rules Practice - PowerPoint PPT Presentation

Divisibility Rules Practice. Johnson 2010. A number that is even is divisible by 2 , 6, and 10 without a doubt. . iRespond Question. Multiple Choice. F. A.) True. B.) False. C.) . D.) . E.) . The Answer?. True! A number that is divisible by 2, 6 and 10 is always even.

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### Divisibility Rules Practice

Johnson 2010

A number that is even is divisible by 2, 6, and 10 without a doubt.

iRespond Question

Multiple Choice

F

A.) True

B.) False

C.)

D.)

E.)

• True!

• A number that is divisible by 2, 6 and 10 is always even.

• Numbers that are divisible by 3,5 and 9 might be even sometimes but NOT ALWAYS!

iRespond Question

Multiple Choice

F

A.) The sum of my digits adds up to 3

B.) The sum of my digits is divisible by 3

C.) The sum of my digits is an odd number

D.) The last two digits are divisible by 3

E.)

• If you picked B, you are correct.

• In order for a number to be divisible by 3, the sum of it’s digit must be divisible by 3!

Which numbers am I divisible by? 3 because

6,381

iRespond Question

Multiple Response

F

A.) 2

B.) 3

C.) 9

D.) 4

E.)

• Did you choose only one answer?

• There are actually two answers to this question! B and C!

• 6,381 is divisible by 3 and by 9.

• Add the digits of the number to get the sum.

• 6 + 3 + 8 + 1 = 18; 1 + 8 = 9

• 9 is divisible by 3 and 9!

Here are my clues:

- commom multiple of 3 and 5

- less than 150

- odd

- tens digit is even

iRespond Question

Multiple Choice

F

A.) 120

B.) 105

C.) 135

D.) 160

E.)

What is the correct answer? number I am?

• 105!

• 105 is a common multiple of 3 and 5

• 105 is less than 150

• 105 is an odd number

• 105 has an even digit in the tens place

Great Job! number I am?

• If you didn’t do so hot, you need to study your divisibilty rules!!

• Now we know how to use our IRespond remotes!