Simplification & Approximation Questions (Chapter-9): Important MCQs to Ace Competitive Exams

Ace Competitive Exams: Simplification and Approximation Practice Questions. Boost your preparation for Indian competitive exams with these concise and challenging simplification and approximation questions, perfect for SSC, Banking, IBPS, CRPF, Police Constable, MTS, ICAR, Railway, ICAR, Delhi Police, CRPF, RBI, RRB, EPFO, CTET, UGC NET, DSSSB, RPF, DRDO, ISRO, CISF, CDS, NDA, ITBP, Airforce, BSF, CAT, CMAT, RPSC, HPSC, UPPSC, OPSC, MPPSC, MPSC, KPSC, TNPSC, UKPSC, BPSC, JKPSC, JPSC, WBPSC, GPSC, TPSC, TSPSC, PPSC, DSSSB & Others State SSC, CRPF, RBI, RRB, EPFO, CTET, UGC NET, DSSSB, RPF, DRDO, ISRO, CISF, CDS, NDA, ITBP, Airforce, BSF, CAT, CMAT & Others

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Simplification & Approximation Practice Test-1

	20 MCQs
	20 Marks
	30 Minutes

1 / 20

Find the value of √85.6 x √9.6

89.4

93.6

56.2

32.8

2 / 20

Approximate π * 7² to the nearest tenth. (Use π = 3.141)

153.9

154.0

220.0

22.0

3 / 20

The value of 25 - 5 [2 + 3 (2 - 2 (5 - 3) + 5) - 10] ÷ 4 is :

5

23.75

23.25

25

4 / 20

Approximate e³ x π² to the nearest whole number. (Use e = 2.718 and π = 3.141)

25

90

60

15

Explanation:

Approximate e³ and π², and then multiply them.
e³ x π² nearly equal to 2.718³ x 3.141² = 20.085 x 9.869 = 198.694
Rounded to the nearest whole number, it is 60.

5 / 20

If x = (5/6) - (1/3) + (1/4), what is the value of x as a fraction?

5/4

3/4

1/2

7/12

6 / 20

What is the square root of 0.09?

0.3

0.03

3.0

0.003

7 / 20

The sum of the cubes of the numbers 22, –15 and –7 is equal to

6930

3

9630

Explanation:

Here, 22 - 15 - 7 = 0
We know that a³+b³+c³ = 3abc,
if a + b + c = 0
(22)³+(–15)³+(–7)³
= 3 x 22 x (–15) (–7) = 6930

8 / 20

Simplify : 8½ -[3¼ ÷(1¼ - ½(1½-⅓-⅙))]

9½

4½

4⅙

2/9

9 / 20

Evaluate √(16²-9²).

25

13

15

17

10 / 20

Simplify the expression (3/4) * ((5/6) + (1/3)) - (2/5).

11/15

7/10

13/15

1/2

11 / 20

If 15% of a number is 45, what is the number?

200

270

300

150

12 / 20

Simplify the expression ⅗ x 7/12 + ¾.

7/6

9/10

5/8

11/15

Explanation:

First, simplify the expression inside the parentheses:
⅗ x 7/12 = (3/5) x (7/12) = 21/60 = 7/20
Now, add 7/20 to 3/4:
7/20 + 3/4 = 7/20 + 15/20 = 22/20 = 11/10 = 1.1
So, the simplified value is 1.1, which is equivalent to 7/6.

13 / 20

Evaluate 2^10 - √144 + 1/2.

1498.5

1506.5

1196.5

1012.5

14 / 20

For what value of ?, statement [{(?)/21}/{(?)/189} = 1 is correct?

63

147

3969

21

15 / 20

What is the simplified value of √18 x √50 - √32?

2√2

√50

√200

4√2

16 / 20

If x = 1/4 + 1/8 + 1/16, what is the value of x as a fraction?

3/8

9/16

5/8

7/16

17 / 20

The square root of 0.342 x 0.684 / (0.000342 x 0.000171) =

250

4000

2000

2500

18 / 20

If I = 3/4 ÷ 5/6, II = 3 ÷ [(4 ÷ 5) ÷ 6], III = [3 ÷ (4 ÷ 5)] ÷ 6, IV = 3 ÷ 4 (5 ÷ 6) then

I and III are equal

All are equal

I and IV are equal

I and II are equal

19 / 20

Approximate (29.7 x 48.6) / 9.2 to the nearest integer.

160

130

150

110

20 / 20

What is the simplified value of 3.2 x (2.5 + 1.8)- 4.6?

12.7

11.9

13.2

14.5

Topics/Syllabus covered in this Chapter’s Mock Test Series

Simplification and Approximation Questions
Explanations/Solutions of difficult questions are also given. As soon as you select the wrong answer, the explanation will be shown below the question.
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