What approximate value will come in place of question mark (?) in the following questions. (You are not expected to calculate the exact value)
`995.013 - 39.976 xx 19.99 + 5.022 = 1.988 xx ?`

Options

A. 115
B. 85
C. 100
D. 125

Answer

To solve the equation \( 995.013 - 39.976 \times 19.99 + 5.022 = 1.988 \times ? \) and find the approximate value of the question mark (?), we will follow these steps:

### Step 1: Round off the values
First, we round off the numbers to their nearest integers:
- \( 995.013 \) rounds to \( 995 \)
- \( 39.976 \) rounds to \( 40 \)
- \( 19.99 \) rounds to \( 20 \)
- \( 5.022 \) rounds to \( 5 \)
- \( 1.988 \) rounds to \( 2 \)

### Step 2: Substitute the rounded values into the equation
Now we substitute the rounded values into the equation:
\[ 995 - 40 \times 20 + 5 = 2 \times ? \]

### Step 3: Perform the multiplication
Next, we calculate \( 40 \times 20 \):
\[ 40 \times 20 = 800 \]

### Step 4: Substitute back into the equation
Now substitute this value back into the equation:
\[ 995 - 800 + 5 = 2 \times ? \]

### Step 5: Simplify the left side
Now simplify the left side:
\[ 995 - 800 = 195 \]
Then add \( 5 \):
\[ 195 + 5 = 200 \]

### Step 6: Set up the equation
Now we have:
\[ 200 = 2 \times ? \]

### Step 7: Solve for ?
To find the value of ?, divide both sides by \( 2 \):
\[ ? = \frac{200}{2} = 100 \]

### Conclusion
Thus, the approximate value that will come in place of the question mark (?) is \( 100 \).

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