PPT: Subtraction | Mathematics for Class 3 PDF Download

 Page 1


S u b t r a c t i o n
Class 3, Mathematics
Page 2


S u b t r a c t i o n
Class 3, Mathematics
Subtraction is the process of taking away
a number from another.  
What is Subtraction?
Subtraction is also known as minus. 
Page 3


S u b t r a c t i o n
Class 3, Mathematics
Subtraction is the process of taking away
a number from another.  
What is Subtraction?
Subtraction is also known as minus. 
For example, if you have 3 apples and you eat 2
apples, you’ll have 1 apples left. We can also say: 
3 - 2 = 1
What is Subtraction?
3 APPLES 2 APPLES 1 APPLE
Object 1
Object 2
Difference
Page 4


S u b t r a c t i o n
Class 3, Mathematics
Subtraction is the process of taking away
a number from another.  
What is Subtraction?
Subtraction is also known as minus. 
For example, if you have 3 apples and you eat 2
apples, you’ll have 1 apples left. We can also say: 
3 - 2 = 1
What is Subtraction?
3 APPLES 2 APPLES 1 APPLE
Object 1
Object 2
Difference
Property 1: If we subtract 0 from a number, the
number stays the same.
Properties:
Example: 3 - 0 = 3
Property 2: If we subtract 1 from a number, we get
the number that comes right before it.
Example: 8 - 1 = 7 and 9 - 1 = 8
Page 5


S u b t r a c t i o n
Class 3, Mathematics
Subtraction is the process of taking away
a number from another.  
What is Subtraction?
Subtraction is also known as minus. 
For example, if you have 3 apples and you eat 2
apples, you’ll have 1 apples left. We can also say: 
3 - 2 = 1
What is Subtraction?
3 APPLES 2 APPLES 1 APPLE
Object 1
Object 2
Difference
Property 1: If we subtract 0 from a number, the
number stays the same.
Properties:
Example: 3 - 0 = 3
Property 2: If we subtract 1 from a number, we get
the number that comes right before it.
Example: 8 - 1 = 7 and 9 - 1 = 8
Property 3: If a number is subtracted from itself,
the result is always 0.
Example: 5 - 5 = 0 and 7 - 7 = 0.