# Outcome: Determine the square root of perfect squares.

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Outcome: Determine the square root of perfect squares.

 1x1=  2x2=  3x3=  4x4=  5x5=  6x6=  7x7=  8x8=  9x9=  10x10=  11x11=  12x12=  13x13=  14x14=  15x15=  16x16=  17x17=  18x18=  19x19=  20x20=

 Ex. If its area is 100cm², what are its dimesions?  ***Remember the formula: A=b x h  How can we represent a square with an area of 25 cm²?

 1. I will give each of you a piece of graph graph paper.  2. Using scissors, cut out a square with an area of any size (minimum area of 4cm²).  3. Write your name on the square.  4. On the back of the square, write the following information:  A) your name (again, I know. Trust me )  B) the dimensions of your square ex. 4cm x 4cm  C) the area of your square ex. 16 cm²

 Nom Dimensions l’aire  1.Stacey 5cm x 5cm 25 cm²  2. Bobby  3.  4.  29.

 Definition:

 A. 81  B. 49  C. 101  D. 36  E. 25  F. 16  G. 48  H. 324  I. 9  J. 625  K. 529  L. 1935  M. 121  N. 1.44

 Definition:  Mathematicians use √ to represent only the PRINCIPAL (POSITIVE) square root!

 10 x 10 =100 and so √100 = 10  (10)²=100 and so √100=10  *10²=10x10 and √100=10 because 100=10x10  If we find the square root of a number and then we square it, we are back to where we started.  0.7 x.07= 0.49 and so √0.49=0.7

IF they are VARIATIONS of perfect squares

 A. √?=0.64  B. √?=0.0081  C. √?=0.49  D. √?=1.44  E. √?=0.25  F. √?=6.25  G. √?=0.0009  H. √?=3.6  I. √?=0.12

 Square root button…  2nd function or inverse…

 A. √100  B. √1  C. √121  D. √4  E. √1.21  F. √0.09  G. √6.25  H. √0.0004  I. √105  J. √1  K. √40 000  L. √4.9  M. √72  N. √14  O. √95  P. √0.4

 If a dance floor has an area of 625 cm², can it be square? Why or why not?

 Show me (on paper) a square with an area of 0.64 cm².

 Book: page 11 #4, 5a-d,6, 7e-j, 8a-d,  9a-d,10-16  Omit the questions with fractions… we will go there tomorrow.