100+ Decimal Fraction Questions for TNPSC Exam - 1

Question: 1

Which of the following fractions is the smallest?

(A) $${13}/{16}$$

(B) $${15}/{19}$$

(C) $${17}/{21}$$

(D) $${7}/{8}$$

Ans: B

We have

$${13}/{16}$$ = 0.8125, $${15}/{19}$$ = 0.7894, $${17}/{21}$$ = 0.8095 and $${7}/{8}$$ = 0.875.

Since 0.7894 is the smallest, so $${15}/{19}$$ is the smallest.

Question: 2

The value of $${3.6 × 0.48 × 2.50} / {0.12 × 0.09 × 0.5}$$ is

(A) 80

(B) 800

(C) 8000

(D) 800000

Ans: B

$${3.6 × 0.48 × 2.50} / {0.12 × 0.09 × 0.5}$$ = $${36 × 48 × 250} / {12 × 9 × 5}$$ = 800.

Question: 3

(833.25 - 384.45) ÷ 24 = ?

(A) 1.87

(B) 18.7

(C) 2.01

(D) 20.1

Ans: B

Given expression = 448.8 ÷ 24 = 18.7.

Question: 4

(0.05 × 5 - 0.005 × 5) equals

(A) 0.0225

(B) 0.225

(C) 0.250

(D) 0.275

Ans: B

Given expression = 0.25 - 0.025 = 0.225.

Question: 5

$${1.6 × 3.2} / {0.08}$$ = ?

(A) 0.8

(B) 6.4

(C) 8

(D) 64

Ans: D

Given expression = $${16 × 32}/{8}$$ = 16 × 4 = 64.

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