Practice Test
Textbook
8 Math AW
Chapter
Chapter 1
Section
Practice Test
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Solutions 8 Videos

Canada is rich in natural resources.

We have abundant water, yet we must conserve this resource.

The average Canadian toilet uses 20 L of water per flush.

a) About how many litres of water are flushed in one household per day? Justify your answer.

b) Suppose you installed a low-consumption toilet that used only 6 L of water per flush. How much water could you save in one day?

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Q1

How is expanded form with powers of 10 like scientific notation? How are they different? Give examples to support your answer.

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Q2

a) Write a 4-digit number that is divisible by 11 and 17.

b) Write the prime factorization of this number.

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Q3

A cell phone company has a monthly service charge of $25 plus 10ยข for each minute or part of a minute of air time.

a) What is the cost if a person uses 100 min of air time in one month?

b) In each expression below, m represents the number of minutes of air time.

Which expression represents the monthly cost in dollars? Explain how you know.

i) \displaystyle10m + 0.25

ii) \displaystyle(25 + 0.10)m

iii) \displaystyle25 + 0.10m

iv) \displaystyle0.10 + 25m

c) Find the cost if a person uses 175 min of air time in 3 months.

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Q4

Solve each equation. Verify the solution.

a) \displaystyle5 + x = 20 - 3

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Q5a

Solve each equation. Verify the solution.

b) \displaystyle11 = 2x - 9

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Q5b

Solve each equation. Verify the solution.

c) \displaystyle6 + 3x = 40 - 1

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Q5c

Three less than 5 times a number is 62.

What is the number?

Show your work.

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Q6