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# Approximation Questions and Answers Quiz 2 for SBI PO

IBPS EXAM Guru

1 . $(32.51)^ 2$ – $(17.45)^ 2$ = ?

 A.   780 B.   850 C.   680 D.   750
2 . 88.25% of 450 = ?% of 530

 A.   70 B.   68 C.   75 D.   80
3 . $\sqrt{898}$ × $(12.005)^ 2$ + ? = 5000

 A.   680 B.   720 C.   750 D.   620
4 . 3745 ÷ 24.05 × 17.98 = ?

 A.   2860 B.   2800 C.   2760 D.   2720
5 . 117.95 × 8.017 × 4.98 = ?

 A.   4670 B.   4780 C.   4840 D.   4720
6 . $(13.001)^3$ = ?

 A.   1900 B.   2200 C.   2000 D.   1800
7 . 55.003 × 54.998 + 5.001 = ?

 A.   3500 B.   3630 C.   2540 D.   3030
8 . 50.001% of 99.99 ÷ 49.999 = ?

 A.   1 B.   0.1 C.   0.01 D.   0.02
9 . 999.0001 + 899.999 – 349.88 = ?

 A.   1549 B.   1560 C.   1449 D.   1460
10 . $(2.0001)\over 3$ × $(1.999)\over –2$ ÷ $(3.999)\over –4$ = ?

 A.   32 B.   216 C.   64 D.   512
Answers & Solutions

1 .
 Answer : Option D Explanation : ? = (32.51 + 17.45) (32.51 – 17.45) = 49.96 × 15.06 $\cong$ 50 × 15 $\cong$ 750
2 .
 Answer : Option C Explanation : $450 \times 88\over 100$ $\cong$ $530 \times ?\over 100$ $\Rightarrow$ ? $\cong$ $450 \times 88\over 530$ $\cong$ 75
3 .
 Answer : Option A Explanation : $\sqrt{900} \times (12)^2 + ? \cong 500 [ 898 \cong 900 ; 12.005 \cong 12]$$\Rightarrow$ 30 x 144 + ? $\cong$ 5000$\Rightarrow$? $\cong$ 5000 – 4320 » 680
4 .
 Answer : Option B Explanation : ? $\cong$ $3745\over 24$ x 18 $\cong$ 2808.75Required answer = 2800
5 .
 Answer : Option D Explanation : ? $\cong$ 118 × 8 × 5 $\cong$ 4720
6 .
 Answer : Option C Explanation : ? $\cong$ (13.001) 3 $\cong$ (13) 3 $\cong$ 2197 $\cong$ 2000
7 .
 Answer : Option D Explanation : ? $\cong$ 55 × 55 + 5 $\cong$ 3025 + 5 $\cong$ 3030
8 .
 Answer : Option A Explanation : ? $\cong$ $100\times 50\over 100$ ÷ 50 $\cong$ 1
9 .
 Answer : Option A Explanation : ? $\cong$ 999 + 900 – 350 $\cong$ 1549
10 .
 Answer : Option D Explanation : ? $\cong$ $2^3 \times (2)^{-2} \div (4)^{-4} \cong$ $2\over (4)^{-4}$ $\cong 2 \times 2^8 \cong 2^9 \cong 512$