Question

Which of the following options is the closest approximate value which will come in place of question mark (?) in the following equation?
$26.52 \times 3.89 - 7.79 \times 2 + 27.39 = ?$

• A. 136
• B. 181
• C. 115
• D. 82

Answer 1

Answer:

C. 115

The closest approximate value is 115.

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To find the approximate value quickly, round each decimal number to its nearest whole number or easy fraction:

Now apply the BODMAS rule to the estimated numbers:

$26.52\times3.89=103.1628\approx103.2$

$7.79\times2=15.58\approx15.6$

$27.39\approx27.4$

$26.52 \times 3.89 - 7.79 \times 2 + 27.39$

$= 103.2-15.6+27.4=115$