What approximate value should come in the place of question mark (?) in the following question? 54.59% of 239.96 + (7.89)3 × 3.94 – 768.08 ÷ 31.94 × 7.98 = ?

What approximate value should come in the place of question mark (?) in the following question? 54.59% of 239.96 + (7.89)3 × 3.94 – 768.08 ÷ 31.94 × 7.98 = ? Correct Answer 1988

Rules of Approximation:

1. If a number have digits to the right of the decimal less than 5. Then just drop the digits to the right of the decimals. The number so obtained will be the approximated value.

2. If a number have digits to the right of the decimal more than 5. Then just drop the digits to the right of the decimals and raise the remaining number by '1'.The number so obtained will be the approximated value.

Concept:

Follow BODMAS rule to solve this question, as per the order given below.

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Since, we need to find out the approximate value, we can write these values to their nearest integers.

Given expression is

54.59% of 239.96 + (7.89)3 × 3.94 – 768.08 ÷ 31.94 × 7.98 = ?

⇒ 55% of 240 + 83 × 4 – 768 ÷ 32 × 8 = ?

⇒ 132 + 512 × 4 – 768 ÷ 32 × 8 = ?

⇒ 132 + 512 × 4 – 24 × 8 = ?

⇒ 132 + 2048 – 192 = ?

⇒ 2180 – 192 = ?

∴ ? = 1988