100+ Decimal Fraction Questions & Answers for Competitive Exams - 1
Question: 1
0.04 × 0.0162 is equal to
(A) 6.48 × 10-2
(B) 6.48 × 10-3
(C) 6.48 × 10-4
(D) 6.48 × 10-5
Ans: C
4 × 162 = 648.
Sum of decimal places = 6.
∴ 0.04 × 0.0162 = 0.000648 = 6.48 × 10-4
Question: 2
$${25.025} / {0.025}$$ is equal to
(A) 10.1
(B) 101
(C) 1001
(D) 10001
Ans: C
$${25.025} / {0.025}$$ = $${25025}/{25}$$ = 1001.
Question: 3
$${.625 × .0729 × 28.9} /{ .0081 × .025 × 1.7}$$ = ?
(A) 3625
(B) 3725
(C) 3825
(D) 382.5
Ans: C
Given expression = $${625 × 729 × 289} / {81 × 25 × 17$$ = 3825.
Question: 4
$${3.5 × 1.4} / {0.7}$$ = ?
(A) 0.7
(B) 7
(C) 7.1
(D) 7.4
Ans: B
Given expression = $${35 × 1.4} / {7}$$ = 5 × 1.4 = 7.
Question: 5
0.5 × 0.5 + 0.5 ÷ 5 is equal to
(A) 0.15
(B) 0.25
(C) 0.35
(D) 0.65
Ans: C
Given expression = $$0.5 × 0.5 + {0.5} / {5}$$ = 0.25 + 0.1 = 0.35.
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