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Riddhi makes the following groups.

5 + 5 + 5 + 5 = 20

Riddhi: I have 4 groups of 5 stamps. How many stamps do I have?

Oh I got it! It is 5 in each group, so let me add:

Group 1 Group 2 Group 3 Group 4 4 groups of 5 make

5 + 5 + 5 + 5 = 20

Chetan: Well done, now tell me my total. I have 3 groups of 3 stamps.

3 + 3 + 3 = 9

Riddhi: It is 3 + 3 + 3 = 9 or it can be 3 times 3, which is equal to 9.

Chetan: Very good, Riddhi. We can say, "3 groups of 3 make 9."

Riddhi: Now, I have made 9 groups of 4 stamps each.

That is, 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 = ________.

There are 9 × 4 = ________ stamps.

We observe that there are an equal number of stamps in each group.
To find the total, repeated addition is used. Repeated addition is called
multiplication. ‘×’ is the sign of multiplication.

79
Multiplication