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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.) . The Answer?. True! A number that is divisible by 2, 6 and 10 is always even.

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slide2

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
The Answer?
  • 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!
slide4

Choose the correct rule: I am a number that is divisible by 3 because

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.)

the answer1
The Answer?
  • 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!
slide6

Which numbers am I divisible by?

6,381

iRespond Question

Multiple Response

F

A.) 2

B.) 3

C.) 9

D.) 4

E.)

your answer
Your Answer?
  • 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!
slide8

Now it\'s time for a MYSTERY NUMBER! Can you guess what number I am?

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
What is the correct answer?
  • 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
Great Job!
  • If you didn’t do so hot, you need to study your divisibilty rules!!
  • Now we know how to use our IRespond remotes!
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