Top 100+ Decimal Fraction Questions and Answers Pdf - 2

 Question: 1

Which of the following is equal to 3.14 × 106?

(A) 311

(B) 314

(C) 3140

(D) 3140000

View Answer

Ans: D

3.14 × 106 = 3.140000 × 1000000 = 3140000.

Question: 2

47.7 × 12.4 × 8.6 = ?

(A) 5086.728

(B) 5218.668

(C) 5708.428

(D) 6180.656

View Answer

Ans: A

477 × 124 × 86 = 5086728

Sum of decimal places = 3.

∴ 47.7 × 12.4 × 8.6 = 5086.728.

Question: 3

What decimal of an hour is a second?

(A) .0025

(B) .0256

(C) .00027

(D) .000126

View Answer

Ans: C

Required decimal = 

1

60×60

 = 

1

3600

 = .0027.

Question: 4

58.621 – 13.829 – 7.302 – 1.214 = ?

(A) 31.254

(B) 33.254

(C) 35.272

(D) 36.276

View Answer

Ans: D

Given expression = 58.621 – (13.829 + 7.302 + 1.214)

= 58.621 – 22.345 = 36.276.

Question: 5

The number 0.0561 correct to two places of decimals is

(A) 0.1

(B) 0.05

(C) 0.06

(D) 0.056

View Answer

Ans: C

The digit at the third decimal place is 6, which is greater than 5.

So, 0.0561, rounded to two decimal places, is 0.06.

Question: 6

4.4 × 5.8 × 11.5 – 141.27 = ?

(A) 121.17

(B) 147.51

(C) 149.54

(D) 152.21

View Answer

Ans: D

Given expression = 293.48 – 141.27 = 152.21.

Question: 7

(0.05 × 6.25) ÷ 2.5 = ?

(A) 0.95

(B) 0.105

(C) 0.115

(D) 0.125

View Answer

Ans: D

Given expression = 

0.05×6.25

2.5

 = 

0.3125

2.5

 = 

31.25

25

 = 0.125.

Question: 8

48 ÷ 75 × 84.5 ÷ 20 = ?

(A) 1.527

(B) 1.834

(C) 1.934

(D) 2.704

View Answer

Ans: D

Given expression = 

48

75

×

84.5

20

 = 0.64 × 4.225 = 2.704.

Question: 9

If 2994 ÷ 14.5 = 172, then 29.94 ÷ 1.45 = ?

(A) 0.172

(B) 0.174

(C) 1.72

(D) 17.2

View Answer

Ans: D

29.94

1.45

 = 

299.4

14.5

 = 

(2994

14.5

×

1

10

) = 172 / 10 = 17.2

Question: 10

The fraction 101

27

100000

 in decimal form is

(A) .01027

(B) .10127

(C) 101.00022

(D) 101.00027

View Answer

Ans: D

101

27

100000

 = 101 + 

27

100000

 = 101 + .00027 = 101.00027.