A number is divisible by $2$ if the units digit is even - that is, it divides by $2$ without a remainder.

A number is divisible by $2$ if the units digit is even - that is, it divides by $2$ without a remainder.

**First way:** A number is divisible by $4$ if its last two digits are divisible by $4$.**Second way:** Multiply the tens digit by $2$ and add the units digit. If the result obtained is a multiple of $4$, then the original number is as well.

A number is divisible by $10$ if its units digit is $0$.

Question 1

Is the number 43 divisible by 4?

Question 2

Is the number 42 divisible by 2?

Question 3

Is the number 30 divisible by 10?

Question 4

Is the number 8 divisible by 2?

Question 5

Is the number 21 divisible by 4?

Is the number 43 divisible by 4?

No

Is the number 42 divisible by 2?

Yes

Is the number 30 divisible by 10?

Yes

Is the number 8 divisible by 2?

Yes

Is the number 21 divisible by 4?

No

Question 1

Is the number 61 divisible by 10?

Question 2

Is the number 16 divisible by 2?

Question 3

Is the number 16 divisible by 4?

Question 4

Is the number 60 divisible by 4?

Question 5

Is the number 60 divisible by 10?

Is the number 61 divisible by 10?

No

Is the number 16 divisible by 2?

Yes

Is the number 16 divisible by 4?

Yes

Is the number 60 divisible by 4?

Yes

Is the number 60 divisible by 10?

Yes

Question 1

Is the number 15 divisible by 2?

Question 2

Is the number 10 divisible by 4?

Question 3

If a number is divisible by 4, is it necessarily also divisible by 2?

Question 4

If a number is divisible by 2, is it therefore also divisible by 4?

Question 5

If a number is divisible by 10, is it also therefore divisible by 2?

Is the number 15 divisible by 2?

No

Is the number 10 divisible by 4?

No

If a number is divisible by 4, is it necessarily also divisible by 2?

Yes.

If a number is divisible by 2, is it therefore also divisible by 4?

No.

If a number is divisible by 10, is it also therefore divisible by 2?

Yes.