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21 st
EVEN AND ODD NUMBERS Century #Experimental Learning
Skills

Objects which come in groups of two are called pairs. The following objects
come in pairs.

A pair of socks A pair of shoes A pair of gloves

Here are 8 marbles. We can make pairs

of marbles by taking 2 marbles at a time.
No marble is left unpaired, so 8 is an even

number.

All the numbers that can be put in pairs, that is in groups of 2s, are called
even numbers.

Here are 7 marbles. Can we make pairs of
marbles by taking 2 marbles at a time?
1 marble is left unpaired.

So, 7 is an odd number.

All the numbers that cannot be put in pairs, that is in groups of 2s, are called
odd numbers.

Odd Even

1 2

3 4 Keep in Mind

1. All the numbers that have 0, 2,
5 6 4, 6 and 8 in the ones place are
called even numbers.

2. All the number that have 1, 3, 5, 7
7 8 and 9 in the ones place are called

odd numbers.

9 10

22 Mathematics 2