Question

Which of the following options is the closest approximate value which will come in place of question mark (?) in the following equation?

11.998 ÷ 2.008 × 3.991 + 14.9929 – 10.002 = ?

• A. 29
• B. 34
• C. 24
• D. 21

Answer 1

Answer:

A. 29

The closest approximate value which will come in place of the question mark is 29.

To solve approximation problems quickly, round each decimal number to its nearest whole integer first:

• $11.998 \approx 12$

• $2.008 \approx 2$

• $3.991 \approx 4$

• $14.9929 \approx 15$

• $10.002 \approx 10$

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Solving using BODMAS rules:

Substitute the rounded whole numbers back into the equation:
$\mathbf{12 \div 2 \times 4 + 15 - 10 = ?}$

• Step 1: Division ($\div$)

  • $12 \div 2 = 6$

  • The equation becomes: $6 \times 4 + 15 - 10$

• Step 2: Multiplication ($\times$)

  • $6 \times 4 = 24$

  • The equation becomes: $24 + 15 - 10$

• Step 3: Addition ($+$)

  • $24 + 15 = 39$

  • The equation becomes: $39 - 10$

• Step 4: Subtraction ($-$))

  • $39 - 10 = 29$