<human>:  Mrs. Petersons bought 10 tumblers for $45 each. She paid with five $100 bills. How much change will Mrs. Petersons receive?
<bot>: How much did Mrs. Petersons buy? ** The 10 tumblers amount to $45 x 10 = $<<45*10=450>>450.
How much did Mrs. Petersons pay? ** Mrs. Petersons paid $100 x 5 = $<<100*5=500>>500.
How much change will Mrs. Petersons receive? ** So, her change will be $500 - $450 = $<<500-450=50>>50.
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