Mathematics · Basic Arithmetic & Number Systems · page 2 of 24

Integers and Decimals MCQs with Answers

Includes 30 past paper MCQs (marked).

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Integers and Decimals MCQs (11–20)

10 MCQs with answers and a short one-liner. Hide answers to test yourself.

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11.
Which of the following is smallest?
Correct Answer: D. $\frac{0.002}{0.003}$
One-liner
The smallest value is $\frac{0.002}{0.003} = \frac{2}{3} \approx 0.667$.
12.
Multiplicative inverse of does not exist.
Correct Answer: A. $0$
One-liner
The multiplicative inverse of $0$ does not exist because division by zero is undefined.
13.
Past Paper MCQ
What is the sum of the first 5 composite numbers?
Correct Answer: C. $37$
One-liner
The sum of the first 5 composite numbers ($4, 6, 8, 9, 10$) is $37$.
14.
The number $1$ is _?
Correct Answer: C. Neither prime nor composite
One-liner
The number $1$ is neither prime nor composite.
15.
Mujahid earns Rs 56,835 in a month, and his wife earns Rs 35,600. Their monthly expenditure is Rs 65,000. Their savings are ?
Correct Answer: A. Rs 27,435
One-liner
Total monthly income is Rs $56,835 + 35,600 = 92,435$, and savings are $92,435 - 65,000 =$ Rs 27,435.
16.
What is the value of $11.08 + 12.09$?
Correct Answer: A. $23.17$
One-liner
The value of $11.08 + 12.09$ is $23.17$.
17.
How many zeros are there in 25 million?
Correct Answer: B. 6
One-liner
25 million is written as $25,\!000,\!000$, which has 6 zeros.
18.
$100 - 45 =$ _?
Correct Answer: A. $55$
One-liner
The result of $100 - 45$ is $55$.
19.
Negative integers are less than _?
Correct Answer: A. $0$
One-liner
Negative integers are less than $0$.
20.
What is the value of $?$ in $1.02 \times ? = 0.5$?
Correct Answer: A. $0.49$
One-liner
The value of $?$ is $0.49$ (approximately).