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Outcome: Determine the square root of perfect squares.

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

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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?

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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

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

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Definition:

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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

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

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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

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IF they are VARIATIONS of perfect squares

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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

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Square root button… 2nd function or inverse…

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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

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

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

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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.

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