RBSE Class 6 Maths Notes Chapter 2 Whole Numbers

These comprehensive RBSE Class 6 Maths Notes Chapter 2 Whole Numbers will give a brief overview of all the concepts.

RBSE Class 6 Maths Chapter 2 Notes Whole Numbers

→ The counting numbers 1, 2, 3,4, 5,.............  are called natural numbers.

→ If we add 1 to natural number we get the successive natural number.

→ If we subtract 1 from any natural number, we get its predecessor.

→ 1 is the smallest natural number.

→ If we include 0 in the group of natural numbers, then we get the group of whole numbers, W = {0,1, 2, 3, ............}

→ Every whole number has a predecessor except 0. Every whole number has a successor.

→ Every natural number is a whole number. Every whole number is a natural number except 0.

→ Operations like addition, subtraction, multiplication and division can be easily performed on the number line.

→ Moving towards right side of number line we can get addition and towards subtraction. Beginning from 0 and moving on equal distance on number line given the multiplication.

→ Whole numbers are closed for addition and multiplication. Addition of two whole numbers is a whole number and multiplication of two whole numbers is also a whole number. Whole numbers are not closed for subtraction and division.

→ Division by 0 is not defined. 0 ÷ 0 is an indeterminant form.

→ Addition and multiplication are commutative for whole numbers.

→ Addition and multiplication are associative for whole numbers.

→ Commutativity, associativity and distributivity of whole numbers makes the calculation easy.

→ 1 is the identity element for multiplication of whole numbers.