`1001.95div48.9xx99-1298.99=?`

Options

A. 700
B. 600
C. 900
D. 250

Explanation

To solve the equation \(1001.95 \div 48.9 \times 99 - 1298.99\) using approximation, we will follow these steps:

### Step 1: Round off the numbers
- **1001.95** can be approximated to **1002** (since the decimal part is greater than 0.5).
- **48.9** can be approximated to **49** (again, since the decimal part is greater than 0.5).
- **99** can be approximated to **100** (since it is very close to 100).
- **1298.99** can be approximated to **1300** (since the decimal part is greater than 0.5).

### Step 2: Rewrite the equation with approximated values
Now, we can rewrite the equation using the approximated values:
\[ 1002 \div 49 \times 100 - 1300 \]

### Step 3: Simplify the division
Next, we perform the division:
\[ 1002 \div 49 \approx 20.5 \quad \text{(but we can round this to 20 for easier calculation)} \]

### Step 4: Multiply the result by 100
Now we multiply the result by 100:
\[ 20 \times 100 = 2000 \]

### Step 5: Subtract 1300
Finally, we subtract 1300 from the result:
\[ 2000 - 1300 = 700 \]

### Final Answer
Thus, the approximate value of the expression \(1001.95 \div 48.9 \times 99 - 1298.99\) is:
\[ \boxed{700} \]

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