Squares & Square Roots Class 8 PPT

 Page 1


Square and Square
Square and Square
roots
roots
C l a s s - 8
Page 2


Square and Square
Square and Square
roots
roots
C l a s s - 8
Introduction to Square Numbers
A natural number n is a square number if it can be
expressed as n², where n is also a natural number.
Examples include 1, 4, 9, 16, and 25.
Page 3


Square and Square
Square and Square
roots
roots
C l a s s - 8
Introduction to Square Numbers
A natural number n is a square number if it can be
expressed as n², where n is also a natural number.
Examples include 1, 4, 9, 16, and 25.
Introduction to Square Numbers
A natural number n is a square
number if it can be expressed
as n², where n is also a natural
number.
Examples include 1, 4, 9, 16, and
25.
Page 4


Square and Square
Square and Square
roots
roots
C l a s s - 8
Introduction to Square Numbers
A natural number n is a square number if it can be
expressed as n², where n is also a natural number.
Examples include 1, 4, 9, 16, and 25.
Introduction to Square Numbers
A natural number n is a square
number if it can be expressed
as n², where n is also a natural
number.
Examples include 1, 4, 9, 16, and
25.
Finding the Square of a Number
The square of a number n is
given as n×n = n².
Example: The square of 5 is
equal to 5×5 = 25.
Page 5


Square and Square
Square and Square
roots
roots
C l a s s - 8
Introduction to Square Numbers
A natural number n is a square number if it can be
expressed as n², where n is also a natural number.
Examples include 1, 4, 9, 16, and 25.
Introduction to Square Numbers
A natural number n is a square
number if it can be expressed
as n², where n is also a natural
number.
Examples include 1, 4, 9, 16, and
25.
Finding the Square of a Number
The square of a number n is
given as n×n = n².
Example: The square of 5 is
equal to 5×5 = 25.
Properties of Square Numbers
If a number has 0, 1, 4, 5, 6, or 9 in the unit's place, it may or
may not be a square number.
If a number has 2, 3, 7, or 8 in its unit place, it is not a square
number.
If a number has 1 or 9 in the unit's place, its square ends in 1.
If a square number ends in 6, the number whose square it is
will have either 4 or 6 in the unit's place.