Hi Readers,
Today’s topic is on Approximation from the Quantitative Aptitude section. Questions from Approximation are frequently asked in banking examinations. If practiced well, one can score full marks in it in very less time. 5 to 10 questions can be expected from this topic in upcoming Prelims and Mains examinations of SBI Clerk Mains, RBI Assistant Mains, SBI PO prelims and IBPS PO Prelims. Below I have provided 15 questions of approximation for practice. Answers with detailed solutions are provided at the end of the questions. Not more than 10 minutes should be invested for solving these. Please note that you don’t need to calculate the exact value. Now, Let’s look at the questions below.
Directions (Ques.1 – 15): What is the approximate value should come in place of question mark (?) in the following questions? (You are not needed to calculate the exact value)
1. 324.99 of 48.07% =?
1) 162
2)156
3) 174
4) 138
5) 144
1)281
2)291
3)271
4)251
5)261
3. 38.93 × 112.67 + 223.854 × 17.893 =?
1)8340
2)8430
3)8450
4)8440
5)8450
4. 945.11 ÷ 34.98 × 20.054 =?
1)413
2)527
3) 365
4)619
5) 567
5. (18.79)² × √730 =?
1)9570
2)9750
3)9700
4)9500
5)10500
6. (16.072)² + (22.202)² + (35.986)² + (38.8761)² =?
1)3560
2)3650
3)3750
4)3570
5)3590
7. 72.35 × 190 + 26 × 13.5 – 110 × 24.5 =?
1)11490
2)11370
3)11580
4)11290
5)11670
8. 49.8% of 579.88 – 529.78% of 540 + 4451.887 =?
1)1880
2) 1460
3)1360
4)1580
5) 1790
9. (42.42)² + (39.549)² – (11.764)² – (45.47)² =?
1) 1010
2)1195
3)2155
4)2210
5)2020
10. 32.23% of 624.699 + 49.876% of 650.112 + 2574.98 =?
1)4200
2)3100
3)2700
4)1750
5)5100
1)6
2)7
3)8
4)9
5)5
12. 487.532 + 2849.029 – 675.48 = 743.095 + ?
1)1900
2)1800
3)1820
4)1900
5)1920
13. (630 +?) x 26 = 2860
1)120
2)260
3)520
4)315
5)290
14. 61.33% of 700 – 450.17 = ? – 85% of 1020
a) 890
2) 820
3)910
4) 830
5) 1040
15. √6578 × √4330÷ √730 = ?
1) 171
2)151
3)191
4)161
5)201
Answers:
Ans 1. 2
325 × (48/100) =?
? = 156
Ans 2. 1
1845 × (48/315) =?
? = 281.14
? = 281 approx
Ans 3. 4
39 × 113 + 224 × 18 =?
4407 + 4032 =?
? = 8439
Ans 4. 5
945 ÷ 35 × 21 =?
27 × 21 =?
? = 567
Ans 5. 2
(19)² × √730 =?
361 × 27 =?
? = 9747
Ans 6. 1
(16)² + (22)² + (36)² + (39)² =?
256 + 484 + 1296 + 1521 =?
? = 3557
Ans 7. 4
72 × 190 + 26 × 14 – 110 × 25 =?
13680 + 364 – 2750 =?
? = 11294
Ans 8. 1
290 – 2862 + 4452 =?
? = 1880
Ans 9. 2
(42)² + (40)² – (12)² – (45)² =?
1764 + 1600 – 144 – 2025 =?
3364 – 2169 =?
?= 1195
Ans 10. 2
32% of 625 + 50% of 650 + 2575 =?
200 + 325 + 2575 =?
? = 3100
Ans 11. 2
(425 ÷ 12.5 +?³) ÷ 30 = 12(1/2)
(34 + ?³) ÷ 30 = (25/2)
34 + ?³ = 375
?³ = 341
? = 7 approx
Ans 12. 5
488 + 2849 – 675 = 743 +?
? = 1919
Ans 13. 3
(630 +?) = 2860/26
(630 +?) = 110
? = 520
Ans 14. 1
61% of 700 – 450 =? – 85% of 1020
427 – 450 =? – 867
? = 890
Ans 15. 5
(81 x 67)/27 =?
? = 201
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