SQUARE AND SQUARE ROOT
Squares are the numbers, generated after multiplying a value by itself. Whereas square root of a number is value which on getting multiplied by itself gives the original value. Hence, both are vice-versa methods.
Square number
The square of a number is the number multiplied by itself. Basic number x basic number = Square number
a x a = a2
4 x 4 = 42
= 16
Splitting up
A square area can be split up into sub-areas. The largest square of 36 is made up of a large square 16, a small square 4 and two rectangles 8 each.
Large square 4 x 4 = 16 a2 Two rectangles 2 x 4 x 2 = 16 2ab Small square 2 x 2 = 4 b2 Sum of sub-areas = 36 = a2+ 2ab + b2
Extracting the square root procedure
• Starting from the decimal point form groups of two figures towards right and left. Indicate by a prime symbol.
• Find the root of the first group, calculate the difference, bring down the next group.
• Multiply the root by 2 and divide the partial radicand.
• Enter the number thus calculated in the divisor for the multiplication.
Along with the Notes there is a video class also available in this post, where so many examples and assignments are available and we hope you will enjoy the class and it will help you to understand better. The whole video class is available in Odia language. Definitely it will help all the students in Odisha to understand and to practice from the given examples and assignments. The video class is available below just click on the play button.