Whole Numbers Class 6 notes - Chapter 2

We have learned about the natural numbers from 1 to 10. Whole numbers are the set natural numbers including with zero.  0 is the smallest whole number.

Whole numbers are 0, 1, 2, 3, ……… All natural numbers are whole numbers, but all whole numbers are not natural numbers

Properties of Whole Numbers

  1. Addition and multiplication of any 2 whole number give a whole number.
  2. Subtraction and division of any 2 whole number may or may not give a whole number.

What is Number line?

A number line is a picture of a graduated straight and horizontal line in which numbers are written.  A number written on the left hand side of the number line is lesser and number written on the right hand side of the number line is greater.

Lets us look into some solved example problems.

Find 12 × 35 using distributivity.

12 × 35 = 12 × (30 + 5)

= 12 × 30 +12 × 5

= 360 + 60

= 420.

Calculate – (2 + 3) + 4 = ?

= 5+ 4

= 9.

Important Questions

  1. Write the next three whole numbers after 73.
  2. Name the smallest whole number?
  3. What is the product of two whole numbers?
  4. Find the product by suitable rearrangement:
    (a) 5 × 7642 × 40
    (b) 2 × 731× 24
    (c) 8 × 291 × 125
    (d) 625 × 279 × 16
    (f) 125 × 40 × 8 × 25

Learn more about the whole numbers from the topics given below:

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