Class 6 Maths Chapter 6 Exercise 6.2 Pdf Notes NCERT Solutions
Class 6 Maths Chapter 6 Integers Exercise 6.2 pdf notes:-
Exercise 6.2 Class 6 maths Chapter 6 Pdf Notes:-
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Ncert Solution for Class 6 Maths Chapter 6 Integers Exercise 6.2 Tips:-
Integers
The first numbers to be discovered were natural numbers i.e. 1, 2, 3, 4,… If
we include zero to the collection of natural numbers, we get a new collection
of numbers known as whole numbers i.e. 0, 1, 2, 3, 4,… You have studied
these numbers in the earlier chapter. Now we find that there are negative
numbers too. If we put the whole numbers and the negative numbers together,
the new collection of numbers will look like 0, 1, 2, 3, 4, 5,…, –1, – 2, – 3,
–4, –5, … and this collection of numbers is known as Integers. In this
collection, 1, 2, 3, … are said to be positive integers and – 1, – 2, – 3,…. are
said to be negative integers.
Ordering of integers Raman and Imran live in a village where there is a step well. There are in all 25 steps down to the bottom of the well. One day Raman and Imran went to the well and counted 8 steps down to water level. They decided to see how much water would come in the well during rains. They marked zero at the existing level of water and marked 1,2,3,4,… above that level for each step. After the rains they noted that the water level rose up to the sixth step. After a few months, they noticed that the water level had fallen three steps below the zero mark. Now, they started thinking about marking the steps to note the fall of water level. Can you help them? Suddenly, Raman remembered that at one big dam he saw numbers marked even below zero. Imran pointed out that there should be some way to distinguish between numbers which are above zero and below zero. Then Raman recalled that the numbers which were below zero had minus sign in front of them. So they marked one step below zero as – 1 and two steps below zero as – 2 and so on. So the water level is now at – 3 (3 steps below zero). After that due to further use, the water level went down by 1 step and it was at – 4. You can see that – 4 < – 3. Keeping in mind the above example, fill in the boxes using > and < signs.
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