RATIONAL NUMBERS(LECTURE 8)

LESSON 8 :   RATIONAL NUMBERS

Dear students

Welcome to a bright and a beautiful day  !!

1.     Take your SET-A Mathematics Register

2.     Make a column on the right hand side, if you need to do any rough work

3.     Write today's date on the line after that.

We will start with AQAD( make a note)

Please write the learning outcomes as mentioned below:

I will be able to:

1.Recall the representation of natural numbers,whole numbers and integers on the number line.

2.Represent a rational number p/q on the number line where -1<p/q<1

Let’s first revise what is a number line?

1.A number on the left is less than a number on the right.

Eg  -5< 2

2.A number on the right is greater than a number on the left.

Eg 3> 1

3.A number line extends indefinitely in both the directions

let's us first quickly revise about  representation of integers on number line.

Look at the question given ☟
write the question in your notebook and draw the  number line corresponding to the correct option.

Hint: below zero means negative and above zero means positive

REPRESENTATION OF RATIONAL NUMBERS

Here, we will be taking  rationals  which are more than - 1 and less than 1

let's us take an eg : Represent 1/2 on the number line
Step 1: Draw a number line as given ☟

step 2: Since 1/2 lies between 0 and 1,so we will divide this length in 
2 equal parts( 2 parts because denominator is 2)

step 3: show 1 out of 2 parts  part as 1/2 as shown below(1 part as numerator is 1)

🔺

                                                                 

Suppose we want to show 1/ 3 on a number line. Into how many equal parts

should the length between 0 and 1 be divided? 

Now, click on the link to learn more about this

Now we will do Q1(ii) of EX 1.2

 Q1 (ii) Represent -5/6 on the number line

Since , -5/6 lies between -1 and 0

so , we will divide length between -1 and 0 into  …6… equal parts.

and take 5  out of 6 parts on the negative side of the number line

Let's do more examples(do it in your notebook)

Ques: Draw number lines and locate the points on them :

(use sharpened pencil and ruler)

(i) 3/5

(ii) 1/4

(iii) -1/2

(iv) - 2/3

now, you can complete Q2 of EX 1.2 as HW

Before you wind up, try your hand at this☟

R,U ,X,A,D, ?

(a)F   (b)G    (c)H    (d)I

let's go through the SDG -6 

That is all for today!

Complete your HW and Revise CW

Be safe!!