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What approximate value should come in place of the question mark (?) in the following question?  1356.111 × 4.087 - 1453.99 × 3.012 + 100.09 × 2.008 = ?

What approximate value should come in place of the question mark (?) in the following question?  1356.111 × 4.087 - 1453.99 × 3.012 + 100.09 × 2.008 = ? Correct Answer 1262

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

Step - 1: Parts of an equation enclosed in 'Brackets' must be solved first, and follow BODMAS rule in the bracket,

Step - 2: Any mathematical 'Of' or 'Exponent' must be solved next,

Step - 3: Next, the parts of the equation that contain 'Division' and 'Multiplication' are calculated,

Step - 4: Last but not least, the parts of the equation that contain 'Addition' and 'Subtraction' should be calculated.

Since, we need to find out the approximate value,

So, we can write these values to their nearest integers.

Given expression is

1356.111 × 4.087 – 1453.99 × 3.012 + 100.09 × 2.008 = ?       ---- (I)

Take approximate values

⇒ 1356.111 ≈ 1356

⇒ 4.087 ≈ 4

⇒ 1453.99 ≈ 1454

⇒ 3.012 ≈ 3

⇒ 100.09 ≈ 100

⇒ 2.0008 ≈ 2

Putting approximated values in equation (I)

⇒ 1356 × 4 – 1454 × 3 + 100 × 2

⇒ 5424 – 4362 + 200 = 1262

∴ ? = 1262

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