McDonald’s Corp. will begin selling a variety of breakfast items for $1 early next month, a spokeswoman for the world’s largest hamburger chain said yesterday.

The move to add to its already popular dollar menu comes as McDonald’s tries to fight a decline in US sales, which have slipped following months of success when its cheap eats were a big draw for recession-strapped diners.

On tap to be added to the menu, which already includes eight items for lunch and dinner time, are the company’s Sausage McMuffin, a sausage burrito, a sausage biscuit, a small coffee and a hash brown.

Some of the items are already sold for a dollar or less at some locations, although prices vary.

Spokeswoman Danya Proud said some restaurants selling the items for less than $1 will likely make substitutions. That allows a restaurant already selling a small coffee for 89 cents to substitute a larger beverage for its Dollar Menu, she said.