decimal fraction aptitude questions – Free Online Questions and Answers

Evaluate :	(2.39)² – (1.61)²
	2.39 – 1.61

A.	2	B.	4
C.	6	D.	8

Answer: Option B

Explanation:

Given Expression =	a² – b²	=	(a + b)(a – b)	= (a + b) = (2.39 + 1.61) = 4.
	a – b		(a – b)

What decimal of an hour is a second ?

A.	.0025	B.	.0256
C.	.00027	D.	.000126

Answer: Option C

Explanation:

Required decimal =	1	=	1	= .00027
	60 x 60		3600

The value of	(0.96)³ – (0.1)³	is:
	(0.96)² + 0.096 + (0.1)²

A.	0.86	B.	0.95
C.	0.97	D.	1.06

The value of	0.1 x 0.1 x 0.1 + 0.02 x 0.02 x 0.02	is:
	0.2 x 0.2 x 0.2 + 0.04 x 0.04 x 0.04

A.	0.0125	B.	0.125
C.	0.25	D.	0.5

Answer: Option B

Explanation:

Given expression =	(0.1)³ + (0.02)³	=	1	= 0.125
	2³ [(0.1)³ + (0.02)³]		8

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

A.	0.172	B.	1.72
C.	17.2	D.	172

Answer: Option C

Explanation:

29.94	=	299.4
1.45	=	14.5

=		2994	x	1		[ Here, Substitute 172 in the place of 2994/14.5 ]
		14.5		10

=	172
	10

= 17.2