Divisibility Rules

Front

What is a divisibility rule?

Back

A rule that helps determine if one number can be divided by another without leaving a remainder.

Front

What is the divisibility rule for 2?

Back

A number is divisible by 2 if it is even, meaning it ends in 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 it ends in 0 or 5.

Front

What is the divisibility rule for 10?

Back

A number is divisible by 10 if it ends in 0.

Front

Is 84 divisible by 2?

Back

Yes, because it is an even number.

Front

Is 123 divisible by 3?

Back

Yes, because the sum of the digits (1+2+3=6) is divisible by 3.

Front

Is 150 divisible by 5?

Back

Yes, because it ends in 0.

Front

Is 49 divisible by 7?

Back

Yes, because 49 ÷ 7 = 7 with no remainder.

Front

What is the divisibility rule for 4?

Back

A number is divisible by 4 if the last two digits form a number that is divisible by 4.