PPT: Double Century | Mathematics for Class 3 (Maths Mela) PDF Download

 Page 1


DOUBLE CENTURY
Page 2


DOUBLE CENTURY
I N TR OD UC T IO N
A long time ago, people didn’t have
numbers like we do today. Instead, they
made marks on walls and trees to count
things. But now, we use just ten digits (0–9)
to write any number, big or small. Let’s
explore how this works!
p l us
t o t a l
add
Page 3


DOUBLE CENTURY
I N TR OD UC T IO N
A long time ago, people didn’t have
numbers like we do today. Instead, they
made marks on walls and trees to count
things. But now, we use just ten digits (0–9)
to write any number, big or small. Let’s
explore how this works!
p l us
t o t a l
add
ANCIENT METHODS OF
COUNTING
Long ago, people counted things by grouping them into 5s, 10s,
20s, or even 60s. This made it easier to keep track of their things
and trade with others. Thousands of years ago, ancient Indians
created a special system using just ten digits: 0, 1, 2, 3, 4, 5, 6, 7, 8,
and 9. This was one of the greatest inventions in history! Thanks to
this number system, we now have TVs, computers, mobile phones,
and many other technologies!
Page 4


DOUBLE CENTURY
I N TR OD UC T IO N
A long time ago, people didn’t have
numbers like we do today. Instead, they
made marks on walls and trees to count
things. But now, we use just ten digits (0–9)
to write any number, big or small. Let’s
explore how this works!
p l us
t o t a l
add
ANCIENT METHODS OF
COUNTING
Long ago, people counted things by grouping them into 5s, 10s,
20s, or even 60s. This made it easier to keep track of their things
and trade with others. Thousands of years ago, ancient Indians
created a special system using just ten digits: 0, 1, 2, 3, 4, 5, 6, 7, 8,
and 9. This was one of the greatest inventions in history! Thanks to
this number system, we now have TVs, computers, mobile phones,
and many other technologies!
A long time ago, people had no way to write "nothing."
Then, they invented zero (0)! This small number made a
big difference! It helped make counting and math
easier. Because of zero, we can do big calculations and
solve tricky problems. Now, this number system is used
all over the world!
THE IMPORTANCE OF ZERO
Page 5


DOUBLE CENTURY
I N TR OD UC T IO N
A long time ago, people didn’t have
numbers like we do today. Instead, they
made marks on walls and trees to count
things. But now, we use just ten digits (0–9)
to write any number, big or small. Let’s
explore how this works!
p l us
t o t a l
add
ANCIENT METHODS OF
COUNTING
Long ago, people counted things by grouping them into 5s, 10s,
20s, or even 60s. This made it easier to keep track of their things
and trade with others. Thousands of years ago, ancient Indians
created a special system using just ten digits: 0, 1, 2, 3, 4, 5, 6, 7, 8,
and 9. This was one of the greatest inventions in history! Thanks to
this number system, we now have TVs, computers, mobile phones,
and many other technologies!
A long time ago, people had no way to write "nothing."
Then, they invented zero (0)! This small number made a
big difference! It helped make counting and math
easier. Because of zero, we can do big calculations and
solve tricky problems. Now, this number system is used
all over the world!
THE IMPORTANCE OF ZERO
A student easily added 1 to numbers
until reaching 99, unsure of what came
next. With guidance, they learned that
99+1 equals 100, realizing numbers go
on infinitely.
MAKING 100