Approximation Test-2 (Rounding off to Integers)

Answer: Option A

Explanation

Given,

$\sqrt{\text{4556}}\text{+}\sqrt{\text{7943}}-\text{56=?}$

It can be approximated as

$\sqrt{\text{4900}}\text{+}\sqrt{\text{7900}}-\text{56=?}$

= 70+90-56  [ nearest perfect square]

= 160-56

= 104 ≈ 100

Hence, Option A is correct.

Answer: Option B

Explanation

Given,

(2198-1347-403)÷(159-113-27)=?

It can be approximated as

(2200-1350-400)÷(160-113-27)=?

= 500÷20

= 25 ≈ 24

Hence, Option B is correct.

Answer: Option A

Explanation

Given,

(775% of 523)÷777=?

It can be approximated as

(800% of 500)÷800=?

= (500×8)÷800

= 4000÷800

= 5

Hence, option A is correct.

Answer: Option A

Explanation

Given,

(825% of 330)÷507=?

It can be approximated as

(800% of 300)÷500=?

= 2400÷500

= 4.8 ≈ 5

Hence, Option A is correct.

Answer: Option C

Explanation

Given,

9546324÷4584=?

It can be approximated as

9550000÷4600=?

= 95500÷46

= 2083

Hence, Option C is correct.