Teacher’s Note: Teacher shall narrate the situation to explain the concept of repeated addition.

__Repeated Addition__

** **

__Travel Through__

**Footwear Shop**

Mugilan and Yazhini
went to a footwear shop. By the time they entered the shop they saw a few of
their friends buying footwear. To their surprise, they found the shop was left
empty after sometime.

So, they
returned home without buying footwear. Can you say, why?

Read
the following conversation. Mugilan and Yazhini explained the situation to their mother.

Yazhini
: Mom, I saw chitu , She flew away with
2 sets of 2 slippers ( 2 + 2 = 4)

Mother
: Oh! I see.

Mugilan
: I saw pussy in the shop. It went away
with 3 sets of 4 slippers (4 + 4 + 4 = 12)

Mother
: Is it so?

Yazhini
: Mom! The fly selected 4 sets of 6 shoes. (6+6+6+6= 24).

Mother
: What happened next?

Mugilan
: Spider chose 5 sets of 8 shoes.

(8+8+8+8+8=40)
If none of the slippers was left in the shop. Can you guess who came next ?

Yazhini : Finally Centipede came and emptied the shop.

**Teacher’s
Note:**** **Teacher shall narrate the situation to
explain the concept of repeated addition.

__Learn__

**Vegetable
farm**

Agilan and Azhagi
are interested in gardening. In the leisure time, they are always found in the
vegetable garden in the backyard. They have four types of vegetable plants. Let
us visit the garden.

**Teacher’s
Note: **Teacher can
create different situation for repeated addition and make children** **practice
in class.

__Practice__

**Use
repeated addition to find the total.**

1.
There are 5 groups. There are 3 chicks in each group. How many chicks are there
altogether?

__Asn : 3 + 3 + 3 + 3 + 3 = 15 chicks__

2. There are 4 bunches. There are 6 bananas in each bunch.
How many bananas are there altogether?

__Ans : 6 + 6 + 6 + 6 = 24 bananas__

3. There
are __3__ trays. There are ** 10**
eggs in each tray. How many eggs are there altogether?

__Ans :
10 + 10 + 10 = 30 eggs__

**Teacher’s
Note:**** **Teacher can make children observe that
repeated addition of even numbers is even but** **repeated addition of odd
numbers is either even or odd.

__Pleasure Time__

Draw the missing figures and complete repeated addition
fact.

Ans:

ii) 2 + 2 + 2 + 2 = 8

iii) 5 + 5 + 5 = 15

iv) 6 + 6 + 6 + 6 = 24

__Learn__

Let us learn repeated addition using number line.

**Start from 0 and
leap in three’s upto 12.**

**Frog will reach 12
in 4 leaps of 3 units each.**

The frog can leap 3
units distance in one attempt.

After the 4th
attempt the distance covered by the frog will be 12 units it is shown as 0 + 3 =
3; 3 + 3 = 6; 6 + 3 = 9; 9 + 3 =12 that is 3 when repeatedly added 4 times gives
12 which can be expressed as 3 + 3 + 3 + 3 = 12 units.

__Practice__

For each of the
distances given below, draw the leaping positions of the frog on the line to
reach 20.

i) one leap covers 2 units distance.

Repeated addition facts ** 2 + 2+ 2+ 2+
2+ 2+ 2+ 2+ 2+ 2** Number of jumbs

ii) one leap covers 4 units distance.

Repeated addition facts ** 4
+ 4 + 4 + 4 + 4** Number of
jumbs

iii) one leap covers 5 units distance.

Repeated addition facts ** 5
+ 5 + 5 + 5** Number of jumbs

** **

__Mental
Maths__

1. Aditya bought 6 packets of groundnut balls. Each packet had 5 groundnut balls. How many groundnut balls did he buy?

__Ans : 5 + 5 + 5 + 5 + 5 + 5 = 30__

2. There are 10 boats. Each boat can accomodate 5 children in it. How many children are there in all?

__Ans : 5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 = 50__

3. Ranjith had a bag that can hold 5 note books. If he had 6 such bags then how many note books does he have in total?

__Ans : 5 + 5 + 5 + 5 + 5 + 5 = 30__

4.
Maghizhini saves 10 rupees a day. How much will she save in 7 days?

__Ans :
10 + 10 + 10 + 10 + 10 + 10 + 10 = 70__

5. There are 7 plates. Each of the plates has 3 fruits in it. How many fruits are there in all?

__Ans :
3 + 3 + 3 + 3 + 3 + 3 + 3 = 21__

Tags : Numbers | Term 3 Chapter 1 | 2nd Maths , 2nd Maths : Term 3 Unit 1 : Numbers

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2nd Maths : Term 3 Unit 1 : Numbers : Repeated Addition | Numbers | Term 3 Chapter 1 | 2nd Maths

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