Skill: Write whole numbers in word form

To write a whole number in word form:

1. Start at the left and read the number by its periods: millions, thousands, and ones.
2. Name the value of each nonzero digit.
3. Say the period name after the millions or thousands period.
4. Do not say digits with a value of zero.

Example

Write $(4{,}205{,}018)$ in word form.

Step 1: Separate the number into periods.

$$4 \mid 205 \mid 018$$

• $4$ is in the millions period.
• $(205)$ is in the thousands period.
• $(018)$ is in the ones period.

Step 2: Read each period.

• $4$ = four million
• $(205)$ = two hundred five thousand
• $(018)$ = eighteen

The zero in the hundreds place of $(018)$ is not named.

Answer:

$$\boxed{\text{four million two hundred five thousand eighteen}}$$

The word form names every nonzero place-value part while skipping places that have a zero.