Here's how to convert 10 pounds 13 ounces to a single unit:

1. Convert ounces to pounds:

* There are 16 ounces in a pound.

* 13 ounces is equal to 13/16 of a pound (approximately 0.8125 pounds)

2. Add the pounds together:

* 10 pounds + 0.8125 pounds = 10.8125 pounds

Therefore, 10 pounds 13 ounces is equal to 10.8125 pounds.