Explain how to do the value of the expression 93.31 - 74.732

To evaluate the expression \(93.31 - 74.732\), follow these steps:

1. **Align the numbers by the decimal point**: 
   - Write the numbers vertically so that their decimal points are aligned.

   \[
   \begin{array}{r}
   93.310 \\
   -74.732 \\
   \hline
   \end{array}
   \]

   Note that you can add an extra zero to \(93.31\) to make it \(93.310\), which doesn't change its value but makes the subtraction easier.

2. **Subtract each column from right to left**:
   - Start from the rightmost column (thousandths place).

   \[
   \begin{array}{r}
   \phantom{-}93.310 \\
   -74.732 \\
   \hline
   \phantom{-}18.578 \\
   \end{array}
   \]

   Here's the step-by-step subtraction:
   - In the thousandths column: \(0 - 2\) requires borrowing from the hundredths column.
   - In the hundredths column: After borrowing, \(1\) becomes \(0\) and the subtraction \(0 - 3\) requires borrowing again.
   - Continue borrowing and subtracting as needed across all columns.

3. **Write the final answer**:
   - The result of the subtraction is \(18.578\).

So, \(93.31 - 74.732 = 18.578\).

Would you like further details on how borrowing works in subtraction, or do you have any other questions?

Here are 5 related questions you might find helpful:
1. How do you subtract numbers with different decimal places?
2. What is the process of borrowing in subtraction?
3. How can you verify the result of a subtraction?
4. How does subtraction of decimals differ from whole numbers?
5. What are some common mistakes to avoid when subtracting decimals?

**Tip:** When subtracting decimals, always align the decimal points and consider adding zeros to make the number of decimal places equal. This helps in performing the operation accurately.

Learn how to subtract decimals with a step-by-step guide. This problem covers arithmetic concepts, including subtraction of decimals and borrowing techniques. Suitable for students in Grades 4-6.

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