Skill: Write whole numbers to 1,000

To write a whole number, look at how many hundreds, tens, and ones it has. Write those digits in the order:

$$\text{hundreds}\quad \text{tens}\quad \text{ones}$$

Example: Write the number with 5 hundreds, 0 tens, and 8 ones.

1. Put the hundreds digit first: $5$.
2. Put the tens digit next: $0$. The zero shows that there are no tens.
3. Put the ones digit last: $8$.

So, the number is:

$$\boxed{508}$$

The digit $5$ has a value of $500$ because it is in the hundreds place. The digit $8$ has a value of $8$ because it is in the ones place. Thus,

$$500+0+8=508$$