What approximate value should come in place of question mark (?) in the following question? (You are not expected to calculate the exact value) 28.13% of 150 + √(63.15 × 6.92) + (7.89)2 = ?
What approximate value should come in place of question mark (?) in the following question? (You are not expected to calculate the exact value) 28.13% of 150 + √(63.15 × 6.92) + (7.89)2 = ? Correct Answer 127
Follow BODMAS rule to solve the expression, as per the order given below,
Step - 1 - Parts of an equation enclosed in the ‘BRACKETS’ must be solved first
Step - 2 - Any mathematical ‘OF’ or ‘EXPONENTS’ must be solved next
Step - 3 - Next the part of the equation that contains ‘DIVISION; and ‘MULTIPLICATION’ is calculated
Step - 4 - Last but not the least, the parts of the equation that contains ‘ADDITION’ and ‘SUBTRACTION’ should be calculated
Given expression is,
28.13% of 150 + √(63.15 × 6.92) + (7.89)2 = ?
We can write the given values as:
28.13 ≈ 28, 63.15 ≈ 63, 6.92 ≈ 7 and 7.89 ≈ 8
Approximating values in the given expression:
⇒ ? = 28% of 150 + √(63 × 7) + 82
⇒ ? = 28% of 150 + √(63 × 7) + 82
⇒ ? = 28 × 150/100 + √(9 × 7 × 7) + 82
⇒ ? = 42 + 21 + 64
∴ ? = 127
