-Square root is the inverse of squaring.
-It is a number multiplied by itself.
A Square Root van be thought of as aside in a square.
You can find the approximate √ of a number using perfect square. the whole number is the same as the smaller perfect square for all √ in between.
To estimate a fractional √ we can find find the whole number.
-To find the denominator of the fraction we subtract the perfect squares.
(25-16=9)
-To find the numerator we count the √
positions between a
perfect squares.
Textbook Questions
5, 12,and 15
5) estimate each value, to one decimal place. Check your answer with calculator.
12) While shopping online, Ji Hun finds a square rug with an area of 11
m² . He needs to know if it will fit in his 4mx5m bedroom.
a)Estimate the side length of the rug, to one decimal place.
b)Check your estimate with a calculator.
√ 3.316
c)Will the rug fit? Explain.
Yes, because the area of the bedroom is 20m² . The square root of the area which is 20 is 4.472 and the square root of the rug (11) is √ 3.316 .
15) Order the following numbers from least to greatest 7, √46, 5.8,√27,6.3
7x7=49
√46
6.3x6.3= 39.6
5.8x5.8= 33.8
√27
answer: √27 ,5.8,6.3,√46 ,7
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