Divisibility Rules

Front

What is the divisibility rule for 5?

Back

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

Front

What is the divisibility rule for 9?

Back

A number is divisible by 9 if the sum of its digits can be divided by 9 evenly.

Front

Is 555,509 divisible by 3?

Back

No, 555,509 is not divisible by 3 because the sum of its digits (5+5+5+5+0+9=29) is not divisible by 3.

Front

Is 64 divisible by 2?

Back

Yes, 64 is divisible by 2 because it is an even number.

Front

Which number is divisible by 6: 1782, 1213, or 536?

Back

1782 is divisible by 6 because it is divisible by both 2 and 3.

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 can be divided by 3 evenly.

Front

Is 100 divisible by 10?

Back

Yes, 100 is divisible by 10 because it ends with a 0.

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.

Front

Is 81 divisible by 9?

Back

Yes, 81 is divisible by 9 because the sum of its digits (8+1=9) is divisible by 9.