# Approximations Questions and Answers updated daily – Aptitude

Approximations Questions: Solved 780 Approximations Questions and answers section with explanation for various online exam preparation, various interviews, Aptitude Category online test. Category Questions section with detailed description, explanation will help you to master the topic.

## Approximations Questions

61. 67.08*âˆš196.45 - 9.99% of 2000.08 - 25.99*8.99 = ?

Correct Ans:504
Explanation:
67.08*âˆš196.45 - 9.99% of 2000.08 - 25.99*8.99 = ?
67* âˆš196 - 10% of 2000 - 26*9 = ?
67*14 - (10/100)*2000 - 26*9 = ?
938 - 200 - 234 = ?
? = 504
Workspace

62. (19.97% of 779.91) + ? + (29.89% of 89.89) = 252

Correct Ans:69
Explanation:
(19.97% of 779.91) + ? + (29.89% of 89.89) = 252
20% of 780 + ? + 30% of 90 = 252
(20/100)*780 + ? + (30/100)*90 = 252
156 + ? + 27 = 252
? = 252 - 183
? = 69
Workspace

63.
12.992 + √?2 = 11.102 + 14.0092

Correct Ans:148
Explanation:
12.992 + √?2= 11.102 + 14.0092
132 + √?2= 112 + 142
169 + ? = 121 +196
? = 317 - 169
? = 148
Workspace

64. âˆš2900 + 126.07% of 350.09 - 23.06 Ã— 15.93 = X

Correct Ans:126
Explanation:
âˆš2900 + 126.07% of 350.09 - 23.06 x 15.93 = X
âˆš2900 + 126% of 350 - 23 x 16 = X
53 + (126/100)*350 - 23 x 16 = X
53 + 441 - 368 = X
126 = X
Workspace

65. ∛(5831.999) + 324 = ? Ã· 32.89

Correct Ans:11,286
Explanation:
∛(5831.999) + 324 = ? Ã· 32.89
∛(5832) + 324 = ? Ã· 33
18 + 324 = ? Ã· 33
342 x 33 = ?
? = 11, 286.
Workspace

66. X% of 4860 - 459.08 + 26.06% of 1350 = 2565.299

Correct Ans:55
Explanation:
X% of 4860 - 459.08 + 26.06% of 1350 = 2565.299
(X/100) x 4860 - 459 + (26/100) x 1350 = 2565
(X/100) x 4860 - 459 + 351 = 2565
(X/100) x 4860 = 2673
X = (2673 x 100)/4860
X = 55
Workspace

67. (34.88)2 - [(46.05)2 Ã· (23.11)] + 13.952 = (?)2 - 39.86

Correct Ans:37
Explanation:
(34.88)2 - [(46.05)2 Ã· (23.11)] + 13.952 = ?2 - 39.86
352 - [462 Ã· 23] + 142 = ?2 - 40
1225 - [(46 x 46) Ã· 23] + 196 = ?2 - 40
1225 - 92 + 196 + 40 = ?2
1369 = ?2
372 = ?2
? = 37.
Workspace

68. (23.9% of 1250.002) - (14.997% of 79.222) = ?

Correct Ans:288
Explanation:
(23.9% of 1250.002) - (14.997% of 79.222) = ?
= (24% of 1250) - (15% of 80)
= (24/100) x 1250 - (15/100) x 80
= 290 - 12
= 288.
Workspace

69. √48.99 x 104.21 ÷ 3 = 3?

Correct Ans:5
Explanation:
√(8.99 x 104.21 ÷ 3 = 3?
√49 x 104 = 3? x 3
7 x 104 = 3? + 1
728 = 3? + 1
36 = 3? + 1
? = 5.
Workspace

70. (216)1.33 x (36)2.5 Ã· (6)2.99 = (6)?

Correct Ans:6
Explanation:
(216)1.33 x (36)2.5 Ã· (6)2.99 = (6)?
[(6)3]1.33 x [(6)2]2.5Ã· (6)2.99 = (6)?
(6)3.99 x (6)5 Ã· (6)2.99 = (6)?
(6)4 x (6)5 x [1/(6)3] = (6)?
(6)6 = (6)?
? = 6
Workspace

71. (39.66)2 - (9.98)2 + 16.01% of 319.73 x 4.976 = ?

Correct Ans:1756
Explanation:
(39.66)2 - (9.98)2 + 16.01% of 319.73 x 4.976 = ?
= (40)2 - (10)2 + 16% of 320 x 5
= 1600 - 100 + (16/100) x 320 x 5
= 1600 - 100 + 256
= 1756
Workspace

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

(13.911/399) ÷ (7/15.07) ÷ (3/160) +171 = ?

Correct Ans:175
Explanation:
Given Expression: (13.911/399) ÷ (7/15.07) ÷ (3/160) +171 = ?
---> (14/400) ÷ (7/15) ÷ (3/160) + 171 = ?
= (14/400) * (15/7) * (160/3) + 171
= 4 + 171
= 175
Workspace

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

6(2/5) of 249.65 of 7.09 = ? of 2399.59

Correct Ans:5
Explanation:
Given expression: 6(2/5) of 249.65 of 7.09 = ? of 2399.59
---> (32/5) * 250 * 7 = ? * 2400
---> (32 * 50 * 7) / 2400 = ?
---> 14/3 = ?
---> ? = 4.66
Hence, ? ≅ 5
Workspace

74. What approximate value should come in place of question mark.
1(1/16.99) of 50.988 + ? % of 5500 = 41.9922 + 49.99

Correct Ans:32
Explanation:
1(1/16.99) of 50.988 + ? % of 5500 = 41.9922 + 49.99
1(1/17) of 51 + ?% of 5500 ≅ 422 + 50
18 * (51/17) + ?% of 5500 ≅ 1764 + 50
54 + ?% of 5500 = 1814
?% of 5500 = 1814 - 54 = 1760
? = 100 * (1760/5500)
? = 32
Workspace

75. What approximate value should come in place of question mark.
(0.000729)1/6 of 302 Ã· 3 + 152 = ?

Correct Ans:315
Explanation:
(0.000729)1/6 of 302 Ã· 3 + 152 = ?
? ≅ 0.3 Ã— 900 Ã· 3 + 225
? = (270Ã·3) + 225
? = 90 + 225 = 315
Workspace

76. What approximate value should come in place of question mark.
(4.989)2 + (21.012)3 + √1090 = ?

Correct Ans:9319
Explanation:
(4.989)2 + (21.012)3 + √1090 = ?
x ≅ 52 + 23 + √1089
≅ 25 + 9261 + 33
x ≅ 9319
Workspace

77. What approximate value should come in place of question mark.
103.1% of 6401.01 "“ 3/7 % of 6300.12 + 11.999 =?

Correct Ans:6577
Explanation:
? ≅ 6400*103 / 100 - 6300 * 3/700 +12
= 6592-27+12
x = 6577
Workspace

78. What approximate value should come in place of question mark.
(7.9899 x 7.002) + √1024.78 + (1.99086)3 = ? ÷ 1/ 5.7865

Correct Ans:16
Explanation:
(7.9899 * 7.002) + √1024.78 + (1.99086)3 = ? ÷ 1/ 5.7865
(8*7) + 32 + 23 â‰ˆ ? * 5.7865
56+32+8 = ? * 8
? = 96/8
? = 16
Workspace

79. What approximate value should come in place of question mark.
(22.99 + 17.01) Ã· 1.998 Ã— 3.997 "“ 41.998 + 644.199 = ?

Correct Ans:682
Explanation:
(22.99 + 17.01) Ã· 1.998 Ã— 3.997 â€“ 41.998 + 644.199 = ?
(23+17)/ 2 * 4 â€“ 42 + 644 â‰ˆ ?
? = 20 * 4 â€“ 42 + 644
? = 80 + 644 â€“ 42
? = 724 â€“ 42
? = 682
Workspace

80. 856 = ? + 428 - (315/4 x 8.74)

Correct Ans:1140
Explanation:
856 = x + 428 - (316+4 x 9)
856 = x + 428 - [(316/4)*9]
856 = x + 428 - 711
x = 856 - 428 + 711 = 1139
x = 1140
Workspace

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