Grade 9
Unit 1 Practice Test
Square Roots and Surface Area
1. Which of the following are perfect squares? Find the square root of the numbers that
are perfect squares.
a) 0.144
12
b) 24
16
c) 100
d) 49
e) 1.21
d) 3
e) 2
2. Find the square of the following numbers.
a)
2
7
3
b) 5
c) 6.21
1
3. Find the perimeter of the following squares based on the given areas.
a)
b)
c)
4. Find the length of the missing sides on the triangles below.
0.5
cm
a)
0.3
cm
4
m
6
m
b)
10
m
m
8m
c)
m
5. Write the perfect square benchmarks that you would use to estimate the square roots
of the following numbers
a) √54
____________ and ____________
b) √0.27 ____________ and ____________
c) √14
____________ and ____________
d) √78
____________ and ____________
6. Calculate the square roots of the following.
12
a) √27
18
b) √63
c) √0.15
d) √0.7
7. Find the surface area of the following composite objects consisting of 1-cm linking
cubes.
a.
b.
c.
8. Find the surface area of the following composite objects.
5 mm
2 mm
8 mm
16 mm
a)
7 mm
12 mm
3 cm
7 cm
6 cm
4 cm
b)
5 cm
c)
d)
e)
f)
g)
h)
i)
j)
k)