# Approximation Questions For IBPS RRB PO PDF

Download Top-20 IBPS RRB PO Approximation Questions PDF. Approximation questions based on asked questions in previous year exam papers very important for the IBPS RRB PO (Officer Scale-I, II & III) exam.

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**Question 2:Â **What approximate value should come in place of the question mark (?) in the following questions?

$59.786 \div 14.444 \times 8.321 = ?$

a)Â 49

b)Â 58

c)Â 22

d)Â 66

e)Â 34

**Question 3:Â **What approximate value should come in place of the question mark (?) in the following question? (You are not expected to calculate the exact value)

$9980 \div 49 \times (4.9)^{2} – 1130 = ?$

a)Â 3800

b)Â 4500

c)Â 2600

d)Â 3000

e)Â 4080

**Question 4:Â **What approximate value should come in place of the question mark (?) in the following equation ?

$695.95\div 29.07 \times ? + 40.25 = 399.99$

a)Â 14

b)Â 17

c)Â 12

d)Â 16

e)Â 15

**Question 5:Â **What approximate value should come in place of the question mark (?) in the following equation ?

$29.38 \times 37.05 \div ? + 7.45 = 100.5$

a)Â 10

b)Â 13

c)Â 14.5

d)Â 1.35

e)Â 12

**Question 6:Â **What approximate value should come in place of question mark(?) in the following equation ?

$9876\div 24.96+215.005-?=309.99$

a)Â 395

b)Â 295

c)Â 300

d)Â 315

e)Â 310

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**Question 7:Â **What approximate value should come in place of the question mark(?) in the following question? (Note: You are not expected to find the exact value).

30.003 * 49.991 * 6.984 = ?

a)Â 7500

b)Â 10500

c)Â 9000

d)Â 13500

e)Â 12000

**Question 8:Â **What approximate value should come in place of the question mark(?) in the following question? (Note: You are not expected to find the exact value).

$\sqrt{7394} = ? $

a)Â 71

b)Â 76

c)Â 81

d)Â 86

e)Â 91

**Question 9:Â **What approximate value should come in place of the question mark (?) in the following questionâ€™?$ 754 \div \sqrt{4076} \times 24 $ = ?

a)Â 294

b)Â 256

c)Â 265

d)Â 300

e)Â 288

**Question 10:Â **What approximate value should come in the place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value)

3001.45 + 34.990 * 29.923 = ?

a)Â 3750

b)Â 3900

c)Â 4000

d)Â 3950

e)Â 4050

**Question 11:Â **What approximate value should come in the place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value)

$\frac{3330}{23}$ = ?

a)Â 145

b)Â 140

c)Â 135

d)Â 130

e)Â 125

**Question 12:Â **What approximate value should come in the place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value)

49.99 * 74.910 * 0.33 = ?

a)Â 1400

b)Â 1000

c)Â 1250

d)Â 1500

e)Â None of the above

**Question 13:Â **What approximate value should come in the place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value)

$\sqrt{11023}$ = ?

a)Â 90

b)Â 95

c)Â 110

d)Â 105

e)Â 115

**Question 14:Â **What approximate value should come in the place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value)

7.997 * 16.005 * 40.055 = ?

a)Â 5400

b)Â 5120

c)Â 5200

d)Â 5000

e)Â None of the above

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**Answers & Solutions:**

**2)Â AnswerÂ (E)**

ExpressionÂ :Â $59.786 \div 14.444 \times 8.321 = ?$

= $\frac{60}{15} \times 8$

= $4 \times 8$

= $32 \approx 34$

**3)Â AnswerÂ (A)**

Since an approximate answer is sufficient, you can rewrite the question as $10000 \div 50 \times 5^{2} – 1130$

Following BDMAS rule the result is 3870.

The nearest value is 3800.

Hence Option A is the correct answer.

**4)Â AnswerÂ (E)**

Let the number to replace the question mark be equal to $X$

Hence, $695.95\div 29.07 \times X + 40.25 = 399.99$

$399.99 \approx 400$ and $695.95 \approx 696$ and $29.07 \approx 29$

So, the expression looks like $696 \div 29 \times X + 40 = 400$

Hence, $24 \times X = 360$ or $X = 15$

**5)Â AnswerÂ (E)**

Let the number to come in place of the question mark be equal to $X$

So, $29.38 \times 37.05 \div X + 7.45 = 100.5$

Or, $29.38 \times 37.05 \div X = 93.05$

So, $X = \frac{29.38 \times 37.05}{93.05} = 11.69 \approx 12$

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**6)Â AnswerÂ (C)**

Let x be the value of the unknown number.

x= $\frac{9876}{24.96}$ + 215.005 – 309.99

= 395.67 – 94.985 $ = \approx$ 300

**7)Â AnswerÂ (B)**

The question can be modified to 30*50*7 to get the approximate answer.

30 * 50 * 7

= 1500 * 7

= 10500

**8)Â AnswerÂ (D)**

We know that $80^2$ is equal to 6400 and $90^2$ = 8100.

Since 7394 is between 6400 and 8100, its square root must lie between 80 and 90.

So, it is either 81 or 86.

Lets find the square of 81 => 81*81 = 6561

=> $\sqrt{7394}$ = 86 approximately

**9)Â AnswerÂ (E)**

In order to find the approximate value of $ 754 \div \sqrt{4076} \times 24 $, we need to find the approximate value of $\sqrt{4076}$

We know that $64^2 = 4096$ and $63^2 = 3969$

So, a rough approximation of $\sqrt{4076} = 63.8$

So, a rough approximation of the expression needed becomes $754 \div 63.8 \times 24 $

We note that 63.8 * 12 = 765

So, $754 \div 63.8 \approx 12$

Hence, the required approximation is $24 \times 12 = 288$

Hence, the correct answer is option (e)

**10)Â AnswerÂ (E)**

The approximate calculation is as follows:

3000 + 35 * 30

35*30 = 1050

3000 + 1050 = 4050

**11)Â AnswerÂ (A)**

23 * 145 = 3335

From the options, we can see that 145 is the number that is closest to the answer.

**12)Â AnswerÂ (C)**

0.33 = 1/3

The approximate calculation is as follows:

50 * 75 * (1/3) = 50 * 25 = 1250

**13)Â AnswerÂ (D)**

$105^2$ = 11025

From the options, the closest number to the square root of 11023 is 105.

**14)Â AnswerÂ (B)**

The approximate calculation is as follows:

8*16*40 = 8*8*2*8*5 = $8^3$ * 10 = 5120