Class 6 Maths Formulas


The fear of Mathematics in students starts right from a young age. Experts at A.V.Powertech say that Mathematics is a subject of reason and logic and requires practice. If students have an understanding of the underlying theories, then memorising the formulas and implementing them to solve questions becomes much simpler. In this part, we are providing you with the list of Class 6 Maths Formulas.

Refer to this post while solving problems. Also, these Maths formulas for Class 6 will be of great help at the time of revision before the exam.

Important Maths Formulas for Class 6: Math Formula List

In this post, you will get to know all the important maths formulas used in Class 6. With the help of these formulas, you can analyze the concepts, compute them and reach the solution. Given below are some of the important topics of Class 6 for which you need to know formulas:

  1. Knowing the Numbers
  2. Whole Numbers
  3. Geometry
  4. Integers
  5. Mensuration
  6. Algebra
  7. Ratio and Proportion

Class 6 Maths Formulas: Knowing the Numbers

Numbers starting from 1, 2, 3, 4, … and so on are known as natural numbers. A group of digits together forms a number where the digits can only be 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9.

1. There are two methods of representing a number:

a) Indian System of Numeration
b) International System of Numeration

2. Place Value of a digit in a number = Face Value × Position Value

3. For two numbers, the number with more digits is always the greater number. In case, two numbers have the same digit, then you can start comparing the leftmost digit of the two numbers.

4. If you want to make the smallest number, then you have to start by choosing 1 in the leftmost part and adding zeroes. For example, the smallest four-digit number is 1000.

5. If you want to make the largest number, then you have to start by choosing 9 in the leftmost part. For example, the largest four-digit number is 9999.

6. Quantity weights:

a) 1 kilometre (km) = 1000 Metres (m)
b) 1 Metre (m) = 100 Centimetre (cm)
c) 1 Centimetre (cm) = 10 Millimetre (mm)
d) 1 Kilogram (kg) = 1000 Grams (gm)
e) 1 Litre (l) = 1000 Millilitres (ml)

7. Roman Numerals:

a) I – 1
b) II – 2
c) V – 5
d) X – 10
e) L – 50
f) C – 100
g) D – 500
h) K – 1000

8. You can add or subtract the roman numerals by writing the desired quantity in either left or right; such as 21 can be written as XXI and 49 ILIX.

Maths Formulas for Class 6: Whole Numbers

Numbers starting from 0, 1, 2, 3, … and so on are known as whole numbers. A number that divides the other number without leaving any remainder is the factor of that number.

1. A multiple of a number is exactly divisible by the number.

2. Number ‘1’ is said to be the factor of every number and is the number that has exactly one factor.

3. Numbers that are divisible by 2 are known as even numbers while numbers that are not divisible by 2 are known as odd numbers.

4. Divisibility rules:

a) A number is divisible by 2 if the unit’s digit number is 0, 2, 4, 6 and 8.
b) A number is divisible by 3 if the sum of all its digits is divisible by 3.
c) A number is divisible by 4 if the digit in its tens and units place is divisible by 4.
d) A number is divisible by 5 if the unit’s digit of the number is 0 and 5.
e) A number is divisible by 6 if it holds the divisibility rule for 2 and 3 true.
f) A number is divisible by 8 if the number formed in its hundreds, digits and units place is divisible by 8.
g) A number is divisible by 9 if the sum of the digits of the number is divisible by 9.
h) A number is divisible by 10 if the unit’s place digit is 0.
i) A number is divisible by 11 if the difference of the sum of its digits in odd places and the sum of its digits in even places is either 0 or divisible by 11.

5. LCM (Least Common Multiple) of two numbers a and b is the smallest positive integer which is divisible by both a and b.

6. HCF (Highest Common Factor) of two numbers a and b is the largest positive integer that divides each of these given integers.

7. If a, b and c are the whole numbers, then

Closure Property of Additiona + b
Closure Property of Multiplicationa × b
Associativity of Addition(a + b) + c = a + (b + c)
Associativity of Multiplicationa × (b × c) = (a × b) × c
Distributive of Multiplication over Additiona × (b + c) = a × b + a × c
Distributive of Multiplication over Subtractiona × (b – c) = a × b – a × c
Existence of Multiplicative Identitya + 0 = a = 0 + a
Existence of Multiplicative Identitya × 0 = 0 = 0 × a
Unit Multiplicationa × 1 = a = 1 × a

Maths Formulas for Class 6: Formulas Geometry

Geometry is the study of different shapes or figures.

1. A line segment corresponds to the shortest distance between two points. The line segment joining points A and B is denoted by AB¯AB¯

2. Two distinct lines meeting at a point are called intersecting lines. Two parallel lines will never intersect each other.

3. A polygon is a simple closed figure comprising different line segments.

a) The line segments are the sides of the polygon.
b) Any two sides with a common endpoint are said to be adjacent sides.
c) The point where a pair of sides meet is called a vertex.
d) The endpoints located on the same sides are adjacent vertices.
e) The line segment joining the endpoints of any two non-adjacent vertices is called a diagonal.

Formulas of Maths Class 6: Integers

The numbers −∞,…,−3,−2,−1,0,1,2,3,….,∞−∞,…,−3,−2,−1,0,1,2,3,….,∞ are considered as integers. where 1, 2, 3, … are positive integers and -1, -2, -3, … are negative integers.

1. 0 is less than every positive integer and greater than every negative integer.

2. The sum of all the positive integers and negative integers is zero.

3. The absolute value of an integer |a||a| is the numerical value of an integer without regard to its sign.

  • a) |a||a| = a, if a is positive
  • b) |a||a| = – a, if a is negative

4. The sum of two integers (same sign) results to an integer of the same sign to which the total absolute value is equal to the sum of the absolute values of two integers.

Maths Formula for Class 6: Mensuration

1. Perimeter is the distance covered by going along the boundary of a closed figure till the point from where you started.

  • (a) Perimeter of a rectangle = 2 × (length + breadth)
  • (b) Perimeter of a square = 4 × length of its side
  • (c) Perimeter of an equilateral triangle = 3 × length of a side

2. Figures in which all sides and angles are equal are called regular closed figures.

3. The amount of surface enclosed by a closed figure is called its area.

4. To calculate the area of a figure using a squared paper, the following conventions are adopted:

  • (a) Ignore portions of the area that are less than half a square.
  • (b) If more than half a square is in a region. Count it as one square.
  • (c) If exactly half the square is counted, take its area as 1/2 sq units.

5. Area of a rectangle = length × breadth

6. Area of a square = side × side = (side)2

Maths Formula for Class 6: Algebra

Algebra is the study of unknown quantities. The letters used to represent some numbers are known as literals.

1. The combination of literal numbers obey all the basic rules of addition, subtraction, multiplication and division along with the properties of such operation.

2. x × y = xy; such as 5 × a = 5a = a × 5.

3. a × a × a × … 9 times = a12

4. Let’s suppose a number is x8, then x is the base and the exponent is 8.

5. A constant is a symbol with a fixed numerical value.

Class 6 Maths Formula: Ratio and Proportion

The ratio of any number “a” to another number “b” (where b ≠ 0) is basically the fraction abab. It is written as a : b.

1. The ratio of two numbers is always expressed in their simplest form. For example, 6868 will be further reduced to 3434.

2. An equality of two ratios is known as the proportion such that a : b = c : d if and only if ad = bc.

3. If a : b = b : c, then a, b and c are in continued proportion.

4. If a, b and c are in continued proportion, a : b :: b : c, then b is represented as the mean proportional between a and c.

  • where more the number of articles, more is the value and vice-versa.


Here are some of the frequently asked questions and their answers:

Q1. Where can I get all the important formulas for Class 6 to Class 12?
Ans. You can get all the important formulas for Class 6 to 12 at A.V.Powertech. 

Q2. Where do I get Maths Formulas Class-wise?
Ans. All class-wise Maths formulas are available on A.V.Powertech.

Q3. Is solving Maths questions from NCERT books enough for Class 6?
 Yes, for Class 6, Maths NCERT textbook is enough. Just make sure you have a clear understanding of the concepts before you move on to solving questions. 

Q4. How can I memorize the Maths formulas for Class 6
Ans. The best way to memorize the Class 6 Maths formulas is by solving practice questions. Refer to the formulas as you solve questions. The more questions you solve, the better you will get at understanding their applications.

Q5. Is Class 6 CBSE Maths difficult to remember?
No, it is not difficult. With regular practice, students can improve their skills in mathematics.

After listing all formulas of Maths Class 6, we have arrived at the end of our article. We hope that you find these mathematical formulas of value in your preparation journey. Feel free to ask your doubts or queries in the comment sections below. We will surely respond to them at the earliest.

Team A.V. Powertech wishes you all the best for your preparations!

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