Approximation Quiz PDF for IBPS Clerk Pre, NIACL Pre, SBI Clerk Pre

Directions: What value will come in place of question mark (?) in the following questions: (You are not expected to calculate the exact value)
1
(626.72 – 257.65) ÷ 23.52 + 623.86 = ?
» Explain it
C
(626.72 – 257.65) ÷ 23.52 + 623.86 = ?

or, ? ≈ (627 – 258) ×  1  + 624
23
 
or, ? ≈ 369 ×  1  + 624
23

or, ? ≈ 16.04 + 624 ≈ 640

Hence, option (C) is correct.

2
10200 × 9215 – (43.96)2 = ? + (64.105)2
» Explain it
D
10200 × 9215 – (43.96)2 = ? + (64.105)2

or, ? ≈ 10201 × 9216 – (44)2 – (64)2

= 101 × 96 – 1936 – 4096

= 9696 – 6032 = 3664

Hence, option (D) is correct.
 
3
2462.92 × 390.06 – 17651.201 = ? + 4883.001
» Explain it
A
2462.92 × 390.06 – 17651.201 = ? + 4883.001

or, ? ≈ 2463 × 390 – 17651 – 4883

= 960570 – 22534 = 938036

Hence, option (A) is correct.

4
1458.45 + 2065.23 ÷ 15.02 = ? – 652.793
» Explain it
C
1458.45 + 2065.23 ÷ 15.02 = ? – 652.793

or, ? ≈ 1458 + 2065 ×  1  + 653
15

≈ 1458 + 137.66 + 653 ≈ 2249

Hence, option (C) is correct.

5
29.783% of 3231 + 48.729% of 4003 = ? – 4823.72
» Explain it
B
29.783% of 3231 + 48.729% of 4003 = ? – 4823.72

or, ? ≈  30  × 3231 ×  49  × 4003 + 4824
100 100

or, ? ≈ 969.3 + 1961.47 + 4824

or, ? ≈ 7754

Hence, option (B) is correct.