Mathematics · Quantitative Aptitude

Number Operations and Properties

974 Questions

Improve your quantitative aptitude with these number operations and properties questions. The topics range from basic subtraction and division to highest common factor and roman numerals. Regular practice of these fundamentals builds speed for exams.

Basic arithmetic operationsHCF and number propertiesRoman numeral calculationsNumber series evaluation

Number Operations and Properties Questions

Multiple choice maths decimal numbers comparing and ordering of decimals more or less comparing decimals

Find the greater number.
$256.356,256.869$

  1. $256.356$
  2. $256.869$

  3. Both are equal

  4. None
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Since the decimal $0.869$ is greater then another decimal number $0.356$ because of the fact that $869>356$.


Also since, the number before the decimals is same in the given numbers that is $256$, therefore, we conclude that $256.869>256.356$

Hence, the greater number is $256.869$.

Multiple choice maths negative numbers and integers odd and even numbers operations on integers different types of numbers

If you add two even numbers together, the answer is

  1. 0

  2. Always even

  3. Sometimes even

  4. Sometimes odd
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

If we add two even numbers the answer is always even.

Let $2a$ and $2b$ be two even numbers as both are divisible by $2$
Sum $=2a+2b$
Sum $=2(a+b)$
which is also divisible by $2$ . So the sum is even.
So option $B$ is correct.

Multiple choice maths negative numbers and integers odd and even numbers operations on integers different types of numbers

Write two odd integers lesser than $1$.

  1. $1,3$
  2. $-1,-3$
  3. $-3,5$
  4. $0,1$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
An odd number is an integer which is not divisible by two. If it is divided by two, then the result is a fraction. The set of odd integers is $-5,-3,-1,1,3,5,7,.....$

The following set of integers is lesser than $1$:

$.....-5,-3,-1,1$

Hence, two of the odd integers lesser than $1$ are $-1,-3$.
Multiple choice maths negative numbers and integers odd and even numbers operations on integers different types of numbers

Write $2$ even integers greater than  $-4$

  1. $-2,-6$
  2. $-6,-8$
  3. $6,8$
  4. $-3,2$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
An even number is an integer which is "evenly divisible" by two. This means that if the integer is divided by $2$, it yields no remainder. The set of even integers is $-6,-4,-2,2,4,6,8,.....$

The following set of integers is greater than $-4$:

$-2,2,4,6,8,.....$

Hence, two of the even integers greater than $-4$ are $6,8$.