Question

Which of the following is a whole number -9 0.01 2 1/2 12/4.

Answer 1

-9 is the whole number because it the number not a fraction or a decimal but a number!

Answer 2

Whole numbers are numbers without a decimal. Some of these numbers are decimals, while others need to be converted. First cross out the ones that are decimals.

-9

0.01 x

2 1/2

12/4

That leaves you with 3 choices. Convert everything to decimal(if possible).

`-9 = -9 \\ \\ 2 (1)/(2) = 2.5 \\ \\ (12)/(4) = 3`

One is a decimal, while the other 2 are whole numbers.

Your answer is
`-9` and
`(12)/(4)`