`1010 - 5 - 36 + 187 * 20.05 = ?`

Options

A. a. 3650
B. b. 3770
C. c. 3825
D. d. 3800

Answer

To solve the expression \( 1010 - 5 - 36 + 187 \times 20.05 \), we will follow the order of operations, often remembered by the acronym BODMAS/BIDMAS (Brackets, Orders, Division and Multiplication, Addition and Subtraction).

### Step-by-Step Solution:

1. **Identify the operations**: The expression consists of subtraction, addition, and multiplication. According to BODMAS, we perform multiplication before addition and subtraction.

2. **Approximate the multiplication**:
\[ 187 \times 20.05 \approx 187 \times 20 \]
Since \( 20.05 \) is very close to \( 20 \), we can use \( 20 \) for approximation.

3. **Calculate the multiplication**:
\[ 187 \times 20 = 3740 \]

4. **Substitute back into the expression**:
\[ 1010 - 5 - 36 + 3740 \]

5. **Perform the subtractions**:
\[ 1010 - 5 = 1005 \]
\[ 1005 - 36 = 969 \]

6. **Add the result of the multiplication**:
\[ 969 + 3740 = 4709 \]

### Final Answer:
\[ 1010 - 5 - 36 + 187 \times 20.05 \approx 4709 \]