Download Divisibility Rules

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

Parity of zero wikipedia, lookup

0.999... wikipedia, lookup

Binary-coded decimal wikipedia, lookup

Addition wikipedia, lookup

Transcript
Divisibility Rules
A number is divisible by __ if …
 2 – the number ends in an even number (0, 2, 4, 6, 8)
 3 – add up the digits and that sum is divisible by 3
 4 – the last 2 digits of the number are divisible by 4
 5 – the number ends in 0 or 5
 6 – the number is divisible by 2 AND 3
 9 – add up the digits and that sum is divisible by 9
Multiply by 11:
When multiplying 11 to a 2-digit number,
separate the digits and put the sum of the digits in the middle: 11 x
34 = 3 __ 4  374
Divisibility Rules
A number is divisible by __ if …
 2 – the number ends in an even number (0, 2, 4, 6, 8)
 3 – add up the digits and that sum is divisible by 3
 4 – the last 2 digits of the number are divisible by 4
 5 – the number ends in 0 or 5
 6 – the number is divisible by 2 AND 3
 9 – add up the digits and that sum is divisible by 9
Multiply by 11:
When multiplying 11 to a 2-digit number,
separate the digits and put the sum of the digits in the middle: 11 x
34 = 3 __ 4  374