Approximation Questions and Answers Quiz 1 for SBI PO

1 . Directions (1 to 10): What approximate value will come in place of the question mark (?) in the following questions ? (Note:You are not expected to calculate exact value). $Q.$ $25\over 9$ x $16\over 53$ x 91 = ? A.   65 B.   75 C.   80 D.   85 2 . $4\over 9$x 5671 - $8\over 15$ x 2520 = ? A.   1200 B.   1120 C.   1100 D.   1175 3 . 4568.6531 – 2431.3178 + 134.675 = ? A.   2272 B.   2372 C.   2172 D.   2200 4 . 24.9% of 5679 + 44.9% of 4301 = ? A.   3455 B.   3355 C.   3255 D.   3555 5 . $(6.99)^ 2$ +$ (8.01)^ 2$ – $\sqrt{85}$ = ? A.   95 B.   115 C.   110 D.   104 6 . 8537.986 – 2416.005 – 221.996 = ? A.   6500 B.   5900 C.   4300 D.   3900 7 . 1019.999 + 60.007 = ? A.   11 B.   23 C.   17 D.   27 8 . 111111 ÷ 1111 ÷ 11 = ? A.   1180 B.   15 C.   1100 D.   9 9 . $\sqrt[3]{5000}$ = ? A.   15 B.   29 C.   9 D.   17 10 . 16.001 × 30.999 × 8.998 = ? A.   4450 B.   4800 C.   4100 D.   3900

Answers & Solutions   1 .     Answer : Option C Explanation : ? $\cong$ $25\over 9$ x $16\over 53$ x 91 $\cong$ 80 2 .     Answer : Option D Explanation : ? $\cong$ $4\over 9$x 5671 - $8\over 15$ x 2520 $\cong$ 2520 – 1344 $\cong$ 1176 $\cong$ 1175 3 .     Answer : Option A Explanation : ? = 4568.6531 + 134.675 – 2431.3178 = 2272.0103 $\cong$ 2272 4 .     Answer : Option B Explanation : ? $\cong$ $25\over 100$ × 5680 + $45\over 100$ × 4300 $\cong$ 1420 + 1935 $\cong$ 3355 5 .     Answer : Option D Explanation : ? $\cong$ $7^2$ + $8^2$ - $\sqrt{81}$ $\cong$ 49 + 64 - 9 $\cong$ 104 6 .     Answer : Option B Explanation : ? $\cong$ 8538 – 2416 – 222 $\cong$ 5900 [8537.986 $\cong$ 8538] 7 .     Answer : Option C Explanation : ? $\cong$ $1020\over 60$ $\cong$ 17 8 .     Answer : Option D Explanation : ? = $111100\over 1111 \times 11$ $\cong$ 9.09 $\Rightarrow$ 9 9 .     Answer : Option D Explanation : $\sqrt[3]{5000}$ $\cong$ 17 10 .     Answer : Option A Explanation : ? $\cong$ 16 × 31 × 9 $\cong$ 4464 Required answer = 4450