Whole numbers from 0 through 1,000,000 are interpreted and expressed in words by using the base-ten place-value structure: ones, thousands, and millions periods, with zero serving as a placeholder for absent places. The reading of a number preserves the value of each digit, including numbers containing internal or trailing zeros, and connects standard notation with place-value and expanded representations; numbers greater than 1,000,000 and more advanced naming conventions are not included.
To read a whole number, separate its digits into groups of three, starting from the right. These groups are called periods:
Read each group from left to right. Do not say the names of places with a zero.
Example: Read .
Separate the number into periods:
The first group is the thousands period, and the second group is the ones period.
Read the thousands period, :
means five hundred seven. Since it is in the thousands period, say five hundred seven thousand.
Read the ones period, :
The zero is a placeholder for the hundreds place. has a value of , so say thirty.
Put the parts together:
The zeros keep the digits in their correct places, but you do not read the zeros aloud.
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