Approximation Questions For IBPS RRB Clerk
Download Top-20 IBPS RRB Clerk Approximation Questions PDF. Approximation questions based on asked questions in previous year exam papers very important for the IBPS RRB Assistant exam
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Question 1: What approximate value should come in place of the question mark (?) in the following questions?
$21 + 68 \div 17 = ? $
a) 25
b) 35
c) 40
d) 10
Question 2: What approximate value should comein place of the question mark (?) in the following equation?
($\frac{1}{9}\div\frac{1}{9}$ of $\frac{1}{3}$) of $\frac{1}{6}=?$
a) $\frac{1}{6}$
b) $\frac{1}{2}$
c) $\frac{1}{9}$
d) $\frac{1}{3}$
Question 3: What approximate value will come in place of question mark (?) in the following questions? (You are not expected to calculate the exact value)
$\frac{29.96}{5.08} – \frac{7.99}{4.01} + \frac{31.97}{7.94}$
a) $6$
b) $7$
c) $8$
d) $9$
e) $10$
Question 4: What approximate value will come in place of question mark (?) in the following questions? (You are not expected to calculate the exact value)
$\frac{107.94}{2.99*3.02} – \frac{44.92}{8.97}$
a) $6$
b) $7$
c) $8$
d) $9$
e) $10$
Question 5: What approximate value will come in place of question mark (?) in the following questions? (You are not expected to calculate the exact value)
$\frac{71.94}{8.99} * \frac{62.91}{7.02}$
a) $64$
b) $72$
c) $80$
d) $81$
e) $63$
Question 6: What approximate value will come in place of question mark (?) in the following questions? (You are not expected to calculate the exact value)
$50.011 – \frac{35.996}{42.007} *48.998$
a) $6$
b) $7$
c) $8$
d) $9$
e) $10$
Question 7: What approximate value will come in place of question mark (?) in the following questions? (You are not expected to calculate the exact value)
$\frac{\sqrt{80.98 * 440}}{6.99}$
a) $24$
b) $27$
c) $30$
d) $32$
e) $36$
Question 8: What approximate value should come in place of (?) in the following equation ?
9876 $\div$ 24.96 + 215.005 – ? = 309.99
a) 395
b) 295
c) 300
d) 315
e) 310
Question 9: What approximate value should come in place of the question mark (?) in the following question ?
$45.709 \div 11.342 \times 6.667 = ?$
a) 88
b) 46
c) 112
d) 56
e) 27
Question 10: What approximate value should come in place of the question mark (?) in the following question?
$54.786 \div 10.121 \times 4.454 = ?$
a) 84
b) 48
c) 118
d) 58
e) 24
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Question 11: What approximate value should come in place of the question mark (?) in the following questions?
$59.786 \div 14.444 \times 8.321 = ?$
a) 49
b) 58
c) 22
d) 66
e) 34
Question 12: What approximate value should come in place of the question mark (?) in the following question?
$4275 \div 496 \times (21)^{2} = ?$
a) 3795
b) 3800
c) 3810
d) 3875
e) 3995
Question 13: 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) 3800
b) 4500
c) 2600
d) 3000
e) 4080
Question 14: What is the approximate value of $\frac{(\sqrt{334} + \sqrt{223}) * (\sqrt{334} – \sqrt{223})}{(\sqrt{111} + \sqrt{11}) * (\sqrt{111} – \sqrt{11})}$?
a) 1.01
b) 1.10
c) 1.11
d) 1.21
Question 15: What is the approximate value of 29/182?
a) .14
b) .13
c) .17
d) .16
e) .18
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Answers & Solutions:
1) Answer (A)
By applying BODMAS we have
=$21+(68\div17)$
=21+4
=25
2) Answer (B)
($\dfrac{1}{9}\div\dfrac{1}{9}$ of $\dfrac{1}{3}$) of $\dfrac{1}{6} = (\dfrac{1}{9} \div \dfrac{1}{27}$) of $\dfrac{1}{6}$
$= \dfrac{1}{9} \times 27$ of $\dfrac{1}{6}$
$= 3 \times \dfrac{1}{6} = \dfrac{1}{2}$
3) Answer (C)
The given expression can be approximated to $\frac{30}{5} – \frac{8}{4} + \frac{32}{8}$
= $6 – 2 + 4$
=$8$.
Therefore, option C is the right answer.
4) Answer (B)
The given expression can be approximated to $\frac{108}{3*3} – \frac{45}{9}$
=$\frac{108}{9} – \frac{45}{9}$
=$\frac{63}{9}$
=$7$.
Therefore, option B is the right answer.
5) Answer (B)
The given expression can be approximated to $\frac{72}{9} * \frac{63}{7}$.
=$8*9$
=$72$
Therefore, option B is the right answer.
6) Answer (C)
The given expression can be simplified as $50 – \frac{36}{42} *49$
=$50 – \frac{6}{7} *49$
=$50 – 42$
= $8$.
Therefore, option C is the right answer.
7) Answer (B)
The given expression can be approximated to $\frac{\sqrt{81 * 441}}{7}$
=$\frac{9*21}{7}$
=$9*3$
=$27$.
Therefore, option B is the right answer.
8) Answer (C)
Expression : 9876 $\div$ 24.96 + 215.005 – ? = 309.99
=> $\frac{9875}{25} + 215 – ? = 310$
=> $395 + 215 – 310 = ?$
=> $? = 610 – 310 = 300$
9) Answer (E)
Expression : $45.709 \div 11.342 \times 6.667 = ?$
= $\frac{44}{11} \times 7$
= $4 \times 7 = 28$
$\approx$ 27
10) Answer (E)
Expression : $54.786 \div 10.121 \times 4.454 = ?$
= $\frac{55}{10} \times 4.5$
= $24.75 \approx 24$
11) Answer (E)
Expression : $59.786 \div 14.444 \times 8.321 = ?$
= $\frac{60}{15} \times 8$
= $4 \times 8$
= $32 \approx 34$
12) Answer (C)
Expression : $4275 \div 496 \times (21)^{2} = ?$
= $\frac{4275 \times 441}{495}$
= 3808.63 $\approx$ 3810
13) Answer (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.
14) Answer (C)
The formula we use to simplify the expression is (a+b)(a-b) = $a^2- b^2$
So, $\frac{(\sqrt{334} + \sqrt{223}) * (\sqrt{334} – \sqrt{223})}{(\sqrt{111} + \sqrt{11}) * (\sqrt{111} – \sqrt{11})}$ = $\frac{334 – 223}{111-11}$ = 1.11
15) Answer (D)
For this fraction, the numerator and denominator do not have any common factors and thus it is irreducible. Thus, it is better to first approximate the denominator to a number which can divide the numerator easily.
29/182 $\approx$ 30/180 = 0.16
