5
Review of Prerequisite Skills • MHR
7. Using spreadsheets Refer to the spreadsheet
section of Appendix B, if necessary.
a) Describe how to refer to a specific cell.
b) Describe how to refer to a range of cells
in the same row.
c) Describe how to copy data into another
cell.
d) Describe how to move data from one
column to another.
e) Describe how to expand the width of a
column.
f) Describe how to add another column.
g) What symbol must precede a
mathematical expression?
8. Similar triangles Determine which of the
following triangles are similar. Explain
your reasoning.
9. Number patterns Describe each of the
following patterns. Show the next three
terms.
a) 65, 62, 59, …
b) 100, 50, 25, …
c) 1, − , , − , …
d) a, b, aa, bb, aaa, bbbb, aaaa, bbbbbbbb, …
10. Ratios of areas Draw two squares on a sheet
of grid paper, making the dimensions of the
second square half those of the first.
a) Use algebra to calculate the ratio of the
areas of the two squares.
b) Confirm this ratio by counting the
number of grid units contained in each
square.
c) If you have access to The Geometer’s
Sketchpad or similar software, confirm
the area ratio by drawing a square,
dilating it by a factor of 0.5, and
measuring the areas of the two squares.
Refer to the help menu in the software,
if necessary.
11. Simplifying expressions Expand and simplify
each expression.
a) (x – 1)
2
b) (2x + 1)(x – 4)
c) –5x(x – 2y)
d) 3x(x – y)
2
e) (x – y)(3x)
2
f) (a + b)(c – d)
12. Fractions, percents, decimals Express as a
decimal.
a)
2
5
0
b)
2
5
3
0
c)
2
3
d)
1
1
3
2
8
e)
6
7
f) 73%
13. Fractions, percents, decimals Express as a
percent.
a) 0.46 b)
4
5
c)
3
1
0
d) 2.25 e)
1
8
1
1
8
1
4
1
2
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