divisibility rules

A number is divisible by 2 if

• the last digit is even.

• the last two digits are even.

• the last digit is odd.

• the last digit is 0, 2, 4, 7, 8

Tags

CCSS.4.OA.B.4

A number is divisible by 6 if

• the last digit is even.

• the last digit is even and divisible by 9.

• the last digit is even and divisible by 3.

• the number is divisible by 3.

A number is divisible by 10 if

• the last digit ends by 0.

• the last two digits is even.

• the sum of the digits is divisible by 2.

• the sum of the three last digits is divisible by 8.

A number is divisible by 25 if

• the last digit is 0 or 5.

• the last two digits are 00, 25, 50, 85.

• the last two digits are divisible by 3.

• the last two digits are divisible by 25.

A number is divisible by 8 if

• the last two digits are 00, 08, 16, 24 ...

• the last digit is divisible by 8.

• the last digit is 8.

• if the last three digits are divisible by 8.

A number is divisible by 4 if

• the last digit is divisible by 4.

• the number is even.

• the last two digits are divisible by 4.

• the last digit is divisible by 2.

A number is divisible by 5 if

• the last digit is divisible by 10.

• the last digit is divisible by 5.

• the last two digits are divisible by 5.

• the last digit is divisible by 25.

A number is divisible by 50 if

• the last two digits are 00 or 50.

• the sum of all digits are divisible by 25.

• the last two digits are divisible by 25.

• the number is even

Tags

CCSS.4.NBT.B.6

CCSS.4.OA.B.4

A number is divisible by 3 if

• the last two digits are divisible by 6.

• the sum of all digits are divisible by 3.

• the last digit is 3, 6 or 9.

• if the last two digits are divisible by 3.

A number is divisible by 125 if

• the last two digits are 00, 25, 50, 75

• the last three digits are 125, 250, 375, 500 625, 750 and 875.

• the last three digits are 000, 125, 250, 375, 500 625, 750 and 875.

• the last digit is divisible by 5.

Tags

CCSS.4.OA.B.4