Activity-2

Objective: To find the sum of two rational numbers with different denominator.

Eg:

Like this…We make a 7 X 3 grid because

the denominator in both the given

rational numbers are 7

and 3 resp.

This “+” sign is to represent

This “-” sign is to represent

Enclose one “+” sign with one “-” sign (Fig. 4)

Now, count the unenclosed signs in Fig 4

Only 1 is left

Result: The rational number represented by unenclosed signs

is

So,