Shown below are net income amounts as they would be determined by Weihrich Steel Company by each of three different inventory costing methods ($ in 000s).

Required:
1. Assume that Weihrich used FIFO before 2011, and then in 2011 decided to switch to average cost. Prepare the journal entry to record the change in accounting principle and briefly describe any other steps Weihrich should take to appropriately report the situation. (Ignore income tax effects.)
2. Assume that Weihrich used FIFO before 2011, and then in 2011 decided to switch to LIFO. Assume accounting records are inadequate to determine LIFO information prior to 2011. Therefore, the 2010 ($540) and pre-2010 ($2,280) data are not available. Prepare the journal entry to record the change in accounting principle and briefly describe any other steps Weihrich should take to appropriately report the situation. (Ignore income tax effects.)
3. Assume that Weihrich used FIFO before 2011, and then in 2011 decided to switch to LIFO cost. Weihrich's records of inventory purchases and sales are not available for several previous years. Therefore, the pre-2010 LIFO information ($2,280) is not available. However, Weihrich does have the information needed to apply LIFO on a prospective basis beginning in 2010. Prepare the journal entry to record the change in accounting principle and briefly describe any other steps Weihrich should take to appropriately report the situation. (Ignore income tax effects.)