Quant Quiz- Approximation



Directions (Q.1-10): What approximate value should come in place of question mark (?) in the following questions? (Note: You are not expected to calculate the exact value.)

1).16.59% of 1349.91=?
a) 180
b) 330
c) 230
d) 51
e) 260

2).∛250047.99 × 240% of 629.49=?
a) 83249
b) 114898
c) 78632
d) 104863
e) 95256

3). {(8.99)2 × 18.98} ÷ √362=?

a) 81
b) 63
c) 79
d) 103
e) None of these

4).119.01+14.997+25.09 × 12.91=?
a) 459
b) 209
c) 389
d) 375
e) 400

5). 461.9% of 1399.99 + 569.99% of 1469.8=?
a) 14925
b) 14321
c) 14635
d) 14847
e) 14559

6). (7895641 ÷ 2795 ÷ 123) × 345 ÷ 456 = ?
a) 17
b) 25
c) 10
d) 30
e) 40

7). 3945 + 15 × 40 – 35.5 = ?
a) 9000
b) 10000
c) 9500
d) 9900
e) 9950

8). (63)2 × 3.545 = ?
a) 14070
b) 15080
c) 13040
d) 14089
e) 15090

9). 3.5 × 0.07 ÷ (1.7)2 = ?
a) 4
b) 3
c) 1
d) 5
e) 2

10). 64% of 159.96 + 72% of 65.005 + (1.4)2 – (0.4)2 = ?
a) 131
b) 141
c) 151
d) 161
e) 171

Answers

1). c
?= 16.59% of 1349.91
≈ (17×1350)/100=229.5 ≈ 230
2). e
?=∛ 250047.99 × 240% of 629.49
≈63 × (240/100) ×630=95256
3). a
?= {(8.99)2 × 18.98} ÷ √362
≈ {81×19}÷19
= (81×19) ÷ 19=81
4). a
?=119.01+14.997+25.09×12.91
=119+15+25×13
=134+325=459
5). d
 ?=461.9% of 1399.99+569.99% of 1469.8
≈ (462/100) ×1400+ (570/100) ×1470
=6468+8379=14847

6). a
? = (7895641 ÷ 2795 ÷ 123) × 345 ÷ 456
≈ 23 × 0.75 ≈ 17

7). d
? = 3945 + 150 × 40 - 35.5
≈ 9945 – 35.5 = 9909.5 ≈ 9900

8). a
? = (63)2 × 3.545
= 3969 × 3.545
= 14070.10 ≈ 14070

9). c
? = 3.5 × 0.07 ÷ (1.7)2
= 3.5 × 0.07 ÷ 2.89
= 3.5 × 0.024
= 0.084 ≈ 1

10). c
? = 64% of 159.96 + 72% of 65.005 + (1.4)2 – (0.4)2
≈ 64% of 160 + 72% of 65 + (1.4)2 – (0.4)2
≈ 102.4 + 46.8 + 1.96 – 0.16
≈ 151 .16 – 0.16 = 151


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