Math 9
Name:_____________________________
Unit 1: Square Root – PRETEST
Please show all your work to earn full marks.
NO CALCULATORS
1. Explain how you can use each diagram to determine the square root
a)
1 mark
√0.36
2 marks
2. Calculate the number whose square root is:
a) 1.4
b)
3. Determine the value of each square root:
a) √0.04 =
6 marks
b) √1.69 =
c =
d) =
e√1.96 =
f) √0.09 =
4. A square has area 144cm2.
1 mark
a) What is the side length of the square?
b) What is the perimeter of the square?
5. A student said that √0.16 0.04
2 marks
Is this student correct? If your answer is yes, how could you check that the square root
is correct? If your answer is no, explain how to get the correct square root.
6. Which decimals and fractions are perfect squares? Explain your reasoning.
a)
c)
4 marks
b) 3.6
d) 0.0025
7. Use benchmarks to estimate each square root.
a) c)
4 marks
b) √42.8
d) √0.6