100+ Decimal Fraction Aptitude Questions and Answers - 2
Question: 6
The value of (4.7 × 13.26 + 9.43 + 4.7 × 77.31) is
(A) 47
(B) 470
(C) 4700
(D) 47000
Ans: B
Given expression = 4.7 × (13.26 + 9.43 + 77.31) = 4.7 × 100 = 470.
Question: 7
The value of $${42} / {10000}$$ in decimal fraction is
(A) .42
(B) .0042
(C) .00042
(D) .420
Ans: B
$${42}/{10000}$$ = .0042.
Question: 8
11.71 – 0.86 + 1.78 – 9.20 = ?
(A) 2.43
(B) 2.45
(C) 3.13
(D) 3.43
Ans: D
Given expression
= (11.71 + 1.78) – (0.86 + 9.20) = 13.49 – 10.06 = 3.43.
Question: 9
The number 518,000,000 when expressed in scientific notation, equals
(A) 51.8 × 106
(B) 51.8 × 107
(C) 5 1.8 × 108
(D) 5.18 × 109
Ans: C
518,000,000 = 5.18 × 100000000 = 51.8 × 108
Question: 10
How many digits will be there to the right of the decimal point in the product of 95.75 and .02554?
(A) 5
(B) 6
(C) 7
(D) 8
Ans: B
Sum of decimal places = 7.
Since the last digit to the extreme right will be zero
(∴ 5 × 4 = 20), so there will be 6 significant digits to the right of the decimal point.
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