3. Solve. \begin{tabular}{|l}\hline a. 10 tens -1 ten 1 tenth \\ b. \end{tabular}

Let's solve the problem step by step. ### Part a: 10 tens - 1 ten + 1 tenth 1. **Convert the terms to a common unit:** - 10 tens = \(10 \times 10 = 100\) - 1 ten = \(1 \times 10 = 10\) - 1 tenth = \(0.1\) 2. **Substitute the values into the expression:** \[ 100 - 10 + 0.1 \] 3. **Perform the calculations step by step:** - First, subtract 10 from 100: \[ 100 - 10 = 90 \] - Then, add 0.1 to 90: \[ 90 + 0.1 = 90.1 \] ### Final Answer for Part a: The result of \(10 \text{ tens} - 1 \text{ ten} + 1 \text{ tenth}\) is \(90.1\). If you have any further parts or questions, please let me know!