Give the step-by-step reasoning process and then the final answer. Shelly has ten $10 bills and four fewer $5 bills. How much money does Shelly have in all?
Shelly's ten $10 bills amount to 10 x $10 = $100. She has 10 - 4 = 6 $5 bills. The 6 $5 bills amount to 6 x $5 = $30. Thus, Shelly has $100 + $30 = $130 in all.
The final answer: 130.