Approximation Questions for Bank PO: Know How to Ace this Type of Question

Simplification and Approximation is one of the important parts of the quantitative aptitude section of the banking PO examination. Every year around 4 to 5 questions are from this section. Therefore, let us understand this one with the help of an example. Also, find out some important rules to solve these types of questions quickly and some example questions to solve.

Simplification and Approximation

Simplification and approximation topics are some of the easiest yet tricky sections of quantitative aptitude. The main idea of this type of question is to test the ability of the students to work with numbers and basic calculations. The question for matric by adding long decimals numbers or roots.

Also Read: IBPS PO Bank Preference List 2021: Factors to Consider Before Choosing the Bank 

BODMAS (Bracket, Order, Division, Multiplication, Addition, and Subtraction)

The basic way to start solving simplification approximation questions is to understand BODMAS. This is a basic sequence of solving such a type of question to find a correct answer.

B- Brackets

O- Order (Powers, Roots, etc)

D- Division

M- Multiplication

A- Addition

S- Subtract

Step 1: First of all you should start by solving brackets. There are three different types of brackets and their order in solving them too. First (common bracket), secondly {curly bracket} and at last [rectangular bracket].

Step 2: After this, you have to solve exponents. For example, power, roots, etc.

Step 3: Then you should start solving division followed by multiplication. This should be done from left to right.

Step 4: Lastly you should source addition and subtraction from left to right.

Also Read: Syllogism Questions for Bank PO: Check Out the Best Questions for Practice and High Scores

Approximation Questions for Bank PO

IBPS PO 2019

Directions (1-5): What approximate value should come in place of question mark (?) in the following question? Note:- (you are not expected to calculate the exact value.)

Q1. ???. ?? + ??. ?? + (?. ??) ? + (?. ??) ? =?

(a) 195

(b) 162

(c) 181

(d) 170

(e) 189

Q2. ???. ??√?− ?? ??.?? ×? = ??. ??√?

(a) 441

(b) 169

(c) 250

(d) 121

(e) 324

Q3. 1332.89 + 171.928 + 17.01 + ?² = 1690.87

(a) 27

(b) 17

(c) 9

(d) 13

(e) 19

Q4. 150.09% of 20 + ???.? ??.?? + √? = (?. ??)²

(a) 984

(b) 1024

(c) 1360

(d) 1225

(e) 674

Q5. 56.08% of 149.92 + √??. ?? × ?. ?? − ?? ? ? % ?? ???. ? =?

(a) 17

(b) -13

(c) 8

(d) -16

(e) 22

Solution

1- C

2- A

3- D

4- B

5- B

IBPS PO 2017

Directions (6-11): Find out the approximate value of? in the following questions.

Q6. (√80. 997 – √2.001 )* (√120.90 +  √16.02 ) =?

(a) 50

(b) 60

(c) 75

(d) 70

(e) 55

Q7. 55.01 – 345.02 ÷ 22.99 =2*?

(a) 20

(b) 25

(c) 22

(d) 15

(e) 18

Q8. √3099.985/62.001+14.001=?

(a) 7

(b) 8

(c) 6

(d) 9

(e) 5

Q9. ( 111.99*5)/14.02=11.002+?

(a) 34

(b) 19

(c) 39

(d) 29

(e) 38

Q10. 24.97% of 84.01 ÷ 6.995 = ?

(a) 3

(b) 4

(c) 5

(d) 7

(e) 6

Q11. (184.002-29/5) *29.99=?

(a) 4950

(b) 4820

(c) 5550

(d) 5340

(e) 5260

Solution

#6. B

#7. A

#8. B

#9. D

#10. A

#11. D

IBPS PO 2016

Directions (12-17): What approximate value should come in the place of question mark (?) in the questions given below ?

Q12. 39.95% of 265 + 35.2% of 178 = 50% of ? + ?% of 80

(a) 80

(b) 95.5

(c) 130

(d) 125.5

(e) 115

Q13.√0.25*0.16  of 15/7 = ?

(a) 0.43

(b) 0.76

(c) 0.91

(d) 0.20

(e) 0.62

Q14. ?/528.99=324.02/?

(a) 404

(b) 408

(c) 410

(d) 414

(e) 416

Q15. (682% of 782.01 )/856.05=?

(a) 4.50

(b) 10.65

(c) 2.55

(d) 8.75

(e) 6.25

Q16. 15.5% of 849 + 24.8% of 651 = ?

(a) 295

(b) 330

(c) 270

(d) 375

(e) 220

Solution

#12. C

#13. A

#14. D

#15. E

#16. A

SBI PO 2018

Direction (17-21): Find the value of (?) in the following approximation questions:

Q17. ?? = ??. ?? ÷ ???. ?? × ????. ?? ÷ ?. ??

(a) 7

(b) 3

(c) 4

(d) 5

(e) 8

Q18. ???.??/ ? = √???. ?? + √??. ??

(a) 17

(b) 20

(c) 10

(d) 34

(e) 40

Q19. 34.02% of 550.09 ÷ ? = 297.07 ÷ √???. ??

(a) 14

(b) 21

(c) 8

(d) 27

(e) 17

Q20. (? ÷ 9.97) × 12.08 = 20.12% of 1319.97

(a) 220

(b) 240

(c) 260

(d) 280

(e) 200

Q21. ? % ?? ???. ?? = √(??. ??) ? + (??. ??) ? + ??. ??% ?? ???. ??

(a) 80

(b) 60

(c) 40

(d) 20

(e) 10

Solution

#17. D

#18. A

#19. E

#20. A

#21. D

SBI PO 2017

Directions (22-26): What approximate value should come in place of the question mark (?) in the following questions? Note: (You are not expected to calculate the exact value.)

Q22. 24.001 × 14.999 × 9.998 = ?

(a) 4200

(b) 3000

(c) 3600

(d) 4000

(e) 2500

Q23. 14.003√?+ 53.0345√? = 67 26.999 × (? )

(a) 801

(b) 720

(c) 729

(d) 721

(e) 744

Q24. 10.11×36.93+√48.875 × 19.99 = 1 is7.231 × √?

(a) 25

(b) 144

(c) 225

(d) 625

(e) 900

Q25. 1898.88 ÷ 189.921 + 9.99 + (? ) 2 = 83.89

(a) 3

(b) 4

(c) 5

(d) 8

(e) 7

Q26. 39.7% ?? 801 − 250.17 = ? −63% ?? 801

(a) 800

(b) 500

(c) 574

(d) 760

(e) 550

Solution

#22. C

#23. C

#24. E

#25. D

#26. C

Time and Work Questions for Bank PO

IBPS PO 2017

Q1. A alone can do a work in 24 days. Time taken by A in completing 1/3 of work is equal to the time taken by B in completing 1/2 of the work. At what time A and B together will complete the work?

(a) 9 days

(b) 10 days

(c) 12 days

(d) 48/5 days

(e) 8 days

Answer: D

IBPS PO 2016

Q.2 14 men can do work in 18 days,15 women can do work in 24 days. If 14 men work for the first three days and 10 women work after that for three days find the part of work left after that?

(a) 3/4

(b) 1/4

(c) 1/2

(d) 1/6

(e) 1/5

Answer: A

Also Read: Coding-Decoding Questions for Bank PO: Types of Coding and Decoding Questions and How to Solve Them

Important Rules To Remember

Here are some certain rules that you should remember to save your time.

Even and Odd

#1. Even + Even = Even

#2. Odd + Odd = Even

#3. Even + Odd= Odd

#4. Even – Even = Even

#5. Odd – Odd = Even

#6. Even – Odd= Odd

#7. Even * Even = Even

#8. Odd * Odd = Odd

#9. Even * Odd = Even

#10. Even + Even = Even

#11. Odd ÷ Odd = Odd

#12. Even ÷ Odd = Even

Square and Square Roots

NUMBER	SQUARE	SQUARE ROOT
1	1	1.000
2	4	1.414
3	9	1.732
4	16	2.000
5	25	2.236
6	36	2.449
7	49	2.646
8	64	2.828
9	81	3.000
10	100	3.162
11	121	3.317
12	144	3.464
13	169	3.606
14	196	3.742
15	225	3.873
16	256	4.000
17	289	4.123
18	324	4.243
19	361	4.359
20	400	4.472
21	441	4.583
22	484	4.690
23	529	4.796
24	576	4.899
25	625	5.000
26	676	5.099
27	729	5.196
28	784	5.292
29	841	5.385
30	900	5.477
31	961	5.568
32	1,024	5.657
33	1,089	5.745
34	1,156	5.831
35	1,225	5.916
36	1,296	6.000
37	1,369	6.083
38	1,444	6.164
39	1,521	6.245
40	1,600	6.325
41	1,681	6.403
42	1,764	6.481
43	1,849	6.557
44	1,936	6.633
45	2,025	6.708
46	2,116	6.782
47	2,209	6.856
48	2,304	6.928
49	2,401	7.000
50	2,500	7.071

Cube and Cube Roots

Natural Number	Cube	Cube Root
1	1	1
2	8	1.260
3	27	1.442
4	64	1.587
5	125	1.710
6	216	1.817
7	343	1.913
8	512	2.000
9	729	2.154
10	1000	2.224
11	1331	2.289
12	1728	2.351
13	2197	2.410
14	2744	2.466
15	3375	2.520
16	4096	2.571
17	4913	2.621
18	5832	2.668
19	6859	2.714
20	8000	2.759
21	9261	2.802
22	10648	2.844
23	12167	2.884
24	13824	2.924
25	15625	2.962
26	17576	3.000
27	19683	3.037
28	21952	3.037
29	24389	3.072
30	27000	3.107
31	29791	3.141
32	32768	3.175
33	35937	3.208
34	39304	3.240
35	42875	3.271
36	46656	3.302
37	50653	3.332
38	54872	3.362
39	59319	3.391
40	64000	3.420
41	68921	3.448
42	74088	3.476
43	79507	3.503
44	85184	3.530
45	91125	3.557
46	97336	3.583
47	103823	3.689
48	110592	3.634
49	117649	3.659
50	125000	3.684

Also Read: SBI PO Previous Years Question Papers: The Best Strategy for the Bank PO Exam Preparation

Conclusion

I hope this article gave you a clear view of the simplification and approximation questions of the Bank PO examination. For similar informative articles and Bank PO preparation material visit UPSC Pathshala.

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