# Zero

### What is zero?

To show nothing or no object we write 0. We read 0 as zero.

### Cage 1                     Cage 2                      Cage 3

In cage 1 we observe that the cage has 2 birds in it.

In cage 2 we observe that 1 bird flies away and the cage has 1 bird in it.

In cage 3 the second bird also flies away. Now the cage has no bird in it.

Therefore, there is no bird in the cage we write 0.

Let us review the number zero.

3 boys are playing.

One of them runs away.

How many are left?

3 - 1 = 2

One more runs away.

How many are left now?

2 - 1 = 1

This boy also runs away.

How many are left now?

1 - 1 = None

None is written as zero

1 - 1 = 0

● Tony like cupcakes. His mother bought 3 cupcakes of different flavours from Mr. Baker's shop.

Tony ate first 1 chocolate cupcake. Now, there are 2 cupcakes left in the plate.

After that, Tony ate 1 strawberry cupcake. Now there is only one cupcake left in the plate.

Tony ate 1 vanilla cupcake after that, there are no more cupcakes in the plate. we say zero cupcakes in the plate.

We write 0 for zero.

● Look at the picture and fill in the blanks.

There are ........ airplanes waiting at the runway.

........ aeroplane takes off. Now there are ........ aeroplane left on the runway.

Next one more plane takes off. Now there is only ........ aeroplane at the runway.

After sometime the last aeroplane also takes off. Now, there is ........ aeroplane left on the runway.

Look at the picture and fill in the blanks.

 _____ apples on the tree.
 ____ apples ate.

______ apples left on the tree.

Let’s practice questions on zero (0).

### Fill in the blanks:

1. There are four balloons in hand. All the four balloons fly away. How many balloons remain in hand?

4 – 4 = ……………. .

2. There are three rats in a trap. All the three rats run away. How many rats remain in the trap?

3 – 3 = ……………. .

3. There are five birds in the cage. All the five birds fly away. How many birds remain in the cage?

5 – 5 = ……………. .

4. 6 - 6 = _____

5. 9 - 9 = _____

6. 1 - 1 = _____

7. 8 - 8 = _____

8. 2 - 2 = _____

Now we will discuss about math Addition and Subtraction Property of Zero.

When we add zero to a number, the number remains the same.

Do orally and play math games on addition

● 0 + 2 = 2

● 4 + 0 = _____       ● 2 + 0 = _____

● 5 + 0 = _____       ● 0 + 4 = _____

● 0 + 6 = _____       ● 0 + 5 = _____

● 9 + 0 = _____       ● 6 + 0 = _____

● 0 + 1 = _____       ● 0 + 9 = _____

● 3 + 0 = _____       ● 1 + 0 = _____

● 0 + 8 = _____       ● 0 + 3 = _____

Subtraction Property of ‘Zero’

There are 2 mangoes in a plate.

Mary does not take any mango.

How many mangoes will be left in the plate?

2 - 0 = 2 (two)

When we subtract zero from a number, the number still remains the same.

Do orally and play math games on subtraction

● 3 - 0 = _____

● 6 - 0 = _____

● 4 - 0 = _____

● 8 - 0 = _____

● 7 - 0 = _____

● 9 - 0 = _____

● 1 - 0 = _____

● 5 - 0 = _____

Math Only Math is based on the premise that children do not make a distinction between play and work and learn best when learning becomes play and play becomes learning.

However, suggestions for further improvement, from all quarters would be greatly appreciated.

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