Features of Multiple of 2 to 11

Front

How do we know that a number is a multiple of 2?

Back

• ALL of Even Numbers

( The number ends with 0, 2, 4, 6, or 8 )

Front

How do you check if a number is a multiple of 3?

Back

Sum of the digits is a multiple of 3.

• Example: 123 → 1+2+3 = 6 → 6 is a multiple of 3

Front

• What’s the rule to check if a number is a multiple of 4?

Back

1. SOME of even numbers (one’s digits should be 2, 4, 6, 8, 0)

Front

• How do you know if a number is a multiple of 5?

Back

• the last digit must be 0 or 5.

Example: 10, 15, 20, 25...

Front

• What condition must be true for a number to be a multiple of 6?

Back

• It must be a multiple of both 2 and 3.

• 1. 1) the number must be even

  2. &

  3. 2) the sum of its digits must be a multiple of 3

Example: 60

1) 60 - last digit is 0

2) 6+0 = 6, 6 is a multiple of 3

Front

• How do you check if a number is a multiple of 7?

Back

they're divisible by 7 with NO REMAINDER

Front

• What’s the rule for checking a multiple of 8?

Back

some of even numbers

Front

• How can you tell if a number is a multiple of 9?

Back

Sum of the digits is a multiple of 9

Example: 117 = 1+1+7 = 9

Front

• How do you know if a number is a multiple of 10?

Back

The number has 2 digits and the last digit must be 0.

Example: 10, 20, 30, 40, ....

==> these all have 0 in the last digit

• + it can be divided by 10 with no remainder

Front

• How do you know if a number is a multiple of 11?

Back

For 2 digits number, both digits should be the same

Example: 11, 22, 33, 44, 55...