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Lesson 5-9 Square Roots and Irrational Numbers
供稿人: Warren
Find the area of this square:
12 in
12 in 
in2
Evaluate:

72 = 
Get ready!!!
(use a comma and a space between each one)
List the first ten perfect squares:
Find the side of this square:
81 cm2
cm
Evaluate:

√121 = 
List the all of the non-perfect squares less than 10:
(use a comma and a space between each one)
Hint: there are six
Is this number rational or irrational?
rational
irrational
0.818118111...
Is this number rational or irrational?
rational
irrational
0.81
Is this number rational or irrational?
rational
irrational
1
9
2
Is this number rational or irrational?
rational
irrational
0.6
Is this number rational or irrational?
rational
irrational
5.23438392...
Is this number rational or irrational?
rational
irrational
√144
Is this number rational or irrational?
rational
irrational
√200
Estimate the value of this expressionto the nearest whole number:
√38 ≈
Estimate the value of this expressionto the nearest whole number:
√105 ≈
Estimate the value of this expressionto the nearest whole number:
√54 ≈
Estimate the value of this expressionto the nearest whole number:
√95 ≈
Use your calculator to find the
square root to the nearest tenth:
(round to one decimal place)
√7 ≈
Use your calculator to find the
square root to the nearest tenth:
(round to one decimal place)
***don't forget the negative***
-√40 ≈
Use your calculator to find the
square root to the nearest tenth:
(round to one decimal place)
√72 ≈
Use your calculator to find the
square root to the nearest tenth:
(round to one decimal place)
***don't forget the negative***
-√90 ≈
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