Divisibility Rules

Front

What is a divisibility rule?

Back

A divisibility rule is a shortcut that helps determine if one number can be divided by another without performing the actual division.

Front

What is the divisibility rule for 2?

Back

A number is divisible by 2 if its last digit is even (0, 2, 4, 6, or 8).

Front

What is the divisibility rule for 3?

Back

A number is divisible by 3 if the sum of its digits is divisible by 3.

Front

What is the divisibility rule for 5?

Back

A number is divisible by 5 if its last digit is 0 or 5.

Front

What is the divisibility rule for 10?

Back

A number is divisible by 10 if its last digit is 0.

Front

Is 278,190 divisible by 5?

Back

True. If the number in the ones place is a 0 or 5, then the number is able to be divided by 5.

Front

Is 1,126 divisible by 10?

Back

False. The last digit is not 0.

Front

Is 23 divisible by 3?

Back

False because the sum of the digits (2+3) is 5 and 5 is not a multiple of 3.

Front

Is 970 divisible by 5?

Back

True. The last digit is 0.

Front

Is 462 divisible by 3?

Back

True because 4 + 6 + 2 = 12 and 12 is a multiple of 3.