Computation of whole numbers for SSC and RRB Exams

By : Neha Uppal

Updated : Sep 15, 2022, 17:43

The computation of whole numbers is a part of the quantitative aptitude section asked in the SSC MTS and CGL exams and railway exams. When you master the skill, it hardly leaves any scope for mistakes. To score well in the quantitative aptitude section and computation of whole numbers, you need to brush up the basic math till class 10th and memorize all-important formulas. Remember, rote learning doesn't work with a concept like the computation of whole numbers. Hence, clarity of concept is the key.

To be able to ace the competitive exam, the candidates appearing for SSC and railway examinations need to practice computation of whole number questions rigorously. Why? Because the section around the number system, whole numbers, and simple calculations usually require a strong quantitative aptitude, which can only be obtained if the aspirant understands the basic concepts and is consistent with practice. Therefore, we're going to cover computation of whole numbers tricks to help you master this topic for the SSC CGL, MTS as well as RRB exams.

Important concepts related to the computation of whole numbers

Calculations with Whole Numbers deal with your ability to understand, compute numbers, and overall mathematical skills. This section is one of the most important and scoring parts of the paper. It holds a lot of importance for employers to understand the arithmetic orientation of the candidate and their overall mental capacity to make quick decisions. We all know that the number system consists of various elements, such as:



Natural numbers

All counting numbers starting from 1,2,3,4,5…...till infinity. The sum and multiplication product of two natural numbers is always a natural number; however, this doesn't stand are concerning subtraction and division.

Whole numbers

All counting numbers, including 0 (zero). These are also commonly called positive/non-negative integers. Like (0,1,2,3,4,5….)


The set of real numbers that consist of all-natural numbers, zero, and their additive inverses. (.....-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5……)

Rational Numbers

All numbers that can be expressed as a ratio between two natural numbers in the form of fractions are called rational numbers. Like ½, ⅓, ¾, etc. All terminable decimals are also rational numbers.

Irrational numbers

Numbers can’t be written as fractions, decimals, or ratios. For, e.g. Square roots, unending decimals (0.33333333...etc.), pie, etc.

Real numbers:

These are numbers that include all of the above types of numbers. Rational, irrational, natural numbers, whole numbers, and so and so forth

Apart from these, some important factors to consider while preparing for computation of whole numbers are:

  • Arithmetic progression,
  • Geometric progression
  • Divisibility tests of different numbers
  • Division and remainder rules
  • Basic number system formulae and
  • Understanding the properties of numbers

Computation of Whole Numbers Tricks:

On the face of it, the computation of whole number questions look easy, and many people often overlook its importance, thinking that they know the tricks and don't need to practice. However, this is a big mistake because we can often err in the simplest things. Hence, practice and taking it seriously is the key. Computation of whole numbers tricks to become an expert in the number system part of the quantitative aptitude section are

  1. Develop a meaning of operation by understanding what are the different methods to deal with the computation of whole numbers.
  2. Be creative and choose the smartest procedure to solve the problems.
  3. Plan out and choose efficient strategies to attempt the questions on the computation of whole numbers and be consistent with practice.
  4. Develop proficiency by solving various computations of whole number PDFs that contain questions and answers related to the topic.
  5. Make mental math an inherent habit. Access the computation of whole numbers pdf available online for this.
  6. Language is never a barrier in math as there are many papers on the computation of whole numbers in Hindi as well.

Most recommended books for the computation of whole numbers

Some easily available and recommended books to use for mastering the computation of whole numbers are:

NCERT mathematics textbooks for classes 8-10

R.S Aggarwal Math textbooks for classes 8-10

R.D Sharma for class 10th

Vedic math by Pt. Shastri Ramadan

Vedic math tips and tricks often stand extremely useful when dealing with the computation of whole number questions for the SSC MTS exam and also general arithmetic calculations. Computation of whole number questions and answers can be attempted using Vedic math too.

Why prepare for the computation of whole numbers using BYJU'S Exam Prep?

BYJU'S Exam Prep gives leeway to a well-prepared Candidate for competitive exams. It's a highly recommended platform for such preparation. With dedicated modules to help you understand the computation of whole numbers like a pro, well-designed and dynamic sample papers, quizzes, and elaborate courses on the topics with syllabi crafted by experts, BYJU'S Exam Prep is an absolute Test Series for competitive exam preparation. Our modules also help you understand the computation of whole numbers in Hindi.

Preparing for this section needs a smart strategy. This can happen only once you have experimented with different methods and revised the basics to have an insight into which method of solving the problem works the fastest and best for you. Don't skip this section even after repetitive practices thinking that you may have already mastered it. You must remember that there is no end to the practice. Ultimate proficiency only comes with rigorous practice and dedicated hours of study. Even at times when you're not sitting to study, keep calculating small problems mentally, like addition, subtraction, multiplication, and division using small numbers. Mental math works wonders in speeding your calculation skills.

Frequently Asked Questions about the computation of whole numbers

1- What are whole numbers?

Whole numbers are all-natural counting numbers, including zero.

2- Are computation of whole number questions
important for SSC and Railway exams?

Yes, the computation of whole number questions
are very important for SSC and railway exams as its quantitative aptitude, on the whole, contains 25 marks.

3- Is mathematics scoring in competitive exams?

With regular practice and consistent efforts, this section is the easiest to solve and the most scoring bit.

4- Is it possible to prepare for the computation of whole numbers section in one month?

Yes, this section comprises basic math that we all have studied till class 10th. With the correct preparation strategy, it’s possible to prepare in one month for topics like the computation of whole numbers.

5- What is the weightage of marks given to problems on the computation of whole numbers?

The weightage of marks given to the computation of whole number questions is around 5-10 marks.