Skill: Read whole numbers to 1,000,000

To read a whole number, separate its digits into groups of three, starting from the right. These groups are called periods:

• millions
• thousands
• ones

Read each group from left to right. Do not say the names of places with a zero.

Example: Read $507{,}030$.

1. Separate the number into periods:

$$507 \mid 030$$

The first group is the thousands period, and the second group is the ones period.

2. Read the thousands period, $507$:

   $507$ means five hundred seven. Since it is in the thousands period, say five hundred seven thousand.

3. Read the ones period, $030$:

   The zero is a placeholder for the hundreds place. $030$ has a value of $30$, so say thirty.

4. Put the parts together:

$$507{,}030=\text{five hundred seven thousand thirty}$$

The zeros keep the digits in their correct places, but you do not read the zeros aloud.