Answer :

Final answer:

In the number 913,256, '913' falls in the thousands period which includes thousands, ten-thousands, and hundred-thousands.

Explanation:

In the number 913,256, the '913' is in the thousands period. American numbering system is divided into sets or groups of three digits, and each set is called a period. Starting from right the first period is the units period, which comprises ones, tens, and hundreds. Next, moving left, the second period includes thousands, ten-thousands, and hundred-thousands. Therefore, '913' falls in the thousands period.

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thousands period is the answer