Start by looking closely at the cost. If the price ends in a nine, then the item is set at full price. However, if the price ends in other numbers, like an eight or a four, that item is on sale.
Also keep an eye out for the small print on the clearance tags. Often times there's a number in the upper right hand corner that represents the markdown percentage from the item's original price.
When an item goes on clearance, the first markdown is usually 15 percent. After that, prices are typically reduced even further every two weeks in increments of 30, 50, 75 and 90 percent. This "two-week discount" rule can vary store to store, so always check with a manager to get the scoop on sale schedules.
One thing to keep in mind, though, is while you can potentially save big by waiting for prices to drop, discounts over 50 percent are rare. So, if you see something you like, don't wait too long to buy it or you might miss out entirely.
The next time you shop at Target, give these tips a try. You may find that it can pay to "know your numbers."