YEAR 9 MATHEMATICS EXAMINATION
SEMESTER 1 2016
QUESTION AND ANSWER BOOKLET
STUDENT NAME:
TEACHER:
DATE:
TIME ALLOWED FOR THIS PAPER Reading time before commencing work: 10 minutes Working time for this paper: 105 minutes MATERIAL TO BE PROVIDED BY THE SUPERVISOR β’ This Question/Answer Booklet
MATERIAL TO BE PROVIDED BY THE CANDIDATE β’ Pen/pencil for answering questions. β’ Erasing stationery. β’ Up to two scientific calculators. β’ Written notes on one unfolded A4 sized paper;
can be double-sided.
TOTAL QUESTIONS: 47 TOTAL MARKS: 108 Section 1: Multiple choice
28 questions, 28 marks
Attempt questions 1 - 28
Section 2: Written answer
19 questions, 80 marks
Attempt questions 1 - 19
AT THE END OF THE EXAMINATION Attach any extra sheets used to this Question/Answer booklet.
IMPORTANT NOTE TO CANDIDATES No other items may be taken into the examination room. It is your responsibility to ensure that you do not have any unauthorised notes or other items of a non-personal nature in the examination room. If you have any unauthorised material with you, hand it to the supervisor BEFORE reading any further.
Kinross College Year 9 Mathematics Exam, Semester 1 2016 1
Do not turn the page until you are asked to do so.
Kinross College Year 9 Mathematics Exam, Semester 1 2016 2
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Section 1: Multiple choice (Total 28 marks, one mark per question)
1. 50, 100, 150, 200, 250,
Which number comes next in this sequence?
a) 251
b) 260
c) 300
d) 350
2. An airline bought 6 new planes for a total cost of $721.5 million. Each plane cost the same amount.
How much did each plane cost?
a) $120.25 million
b) $360.75 million
c) $715.5 million
d) $4329 million
3. The map shows the different directions four cars are travelling.
Which car is travelling south-east?
a) Car A
b) Car B
c) Car C
d) Car D
Kinross College Year 9 Mathematics Exam, Semester 1 2016 3
4. Martina asked students in her class where they were born.
She used the data to draw this graph.
Where were about a quarter of the students born?
a) Australasia c) Europe
b) Asia d) Africa
5. Toni wants to bake 7 cakes.
Each cake needs 4 eggs. She has no eggs so she goes to the shop.
The shop sells eggs in cartons of 6.
How many cartons of eggs does Toni need?
a) 2 c) 5
b) 4 d) 7
6. This shape is made with 6 equilateral triangles.
What is the perimeter of the shape?
a) 6 cm c) 10 cm
b) 8 cm d) 18 cm
Kinross College Year 9 Mathematics Exam, Semester 1 2016 4
7. Which arrow is pointing to the approximate position of β800 on a number line?
a) b) c) d)
8. Sarah is painting a wall using three colours.
She paints 13
of the wall blue, 14
of the wall green and the rest yellow.
What fraction of the wall does she paint yellow?
1012
512
57
712
a) b) c) d)
9. Mike sells cars. His weekly salary, π dollars, is calculated using this rule:
π = 500 + 0.02π
where π is the total value in dollars of the cars he sells that week.
Last week, the total value of cars Mike sold was $120 000.
What was Mikeβs salary last week?
a) $740 b) $1205 c) $2900 d) $6000 e) $24 000
10. Which shape has
25 shaded?
a) b) c) d
Kinross College Year 9 Mathematics Exam, Semester 1 2016 5
11. Which statement is not correct?
a) π΄π΅2 = π΅πΆ2 + π΄πΆ2 c) π΅πΆ2 = π΄π΅2 β π΄πΆ2
b) π΄π΅2 = π΅πΆ2 β π΄πΆ2 d) π΄πΆ2 = π΄π΅2 β π΅πΆ2
12. What is the simple interest earned after six years when $450 is invested into an account that pays 3% per annum?
a) $81.00 c) $87.32
b) $531.00 d) $537.32
13. Which expression does not equal 3π₯?
a) π₯ Γ π₯ Γ π₯
b) 3 Γ π₯
c) 4π₯ β π₯
d) π₯ + π₯ + π₯
14. The expression
β8Γββ2
simplifies to:
a) β7 b) 1β7
c) 1β6
d) 1β4
15. Expanded, (π¦ β 2)2 is equivalent to:
a) π¦P
2 β 4 b) π¦P
2 β 4π¦ + 4
c) 4 βπ¦P
2 d) π¦P
2+P 4π¦ + 4
Kinross College Year 9 Mathematics Exam, Semester 1 2016 6
16. (π₯ β 4)(π₯ + 5) expands to:
a) π₯2 + π₯ β 20
b) π₯2 + π₯ β 9
c) π₯2 β 9π₯ β 20
d) π₯2 + 9π₯ + 20
17. Expanded, βπ(ππ β π) is equal to:
a) 6π₯ + 3 c) 2π₯ + 3
b) β6π₯ + 3 d) 6π₯ β 1
18. Use your calculator to evaluate
β11β1β3
correct to 2 decimal places.
a) 1.33 c) 1.34
b) 2.73 d) 2.74
19. A bag is marked at $120. A retailer offers a 15% discount.
What is the discounted price?
a) $18 c) $102
b) $105 d) $112
20. Fully factorising 5π5π‘7 β 10π5π‘ gives:
a) 5π5π‘(π‘6 β 2) c) 5π5(π‘7 β 2π‘)
b) 5ππ‘(ππ‘12 β 2) d) π5π‘(5π‘6 β 10)
Kinross College Year 9 Mathematics Exam, Semester 1 2016 7
21. Evaluated, (2)5 Γ (π2)3 Γ (π6)2 equals:
a) 10π17 c) 32π17
b) 25π6 d) 32π18
22. The number 15-2 is equivalent to:
a) 30-1 c) -152
b) 130
d) 1225
23. What is the solution to the equation 3π + 1 = 4 βπ?
a) π = 34
c) π = 54
b) π = 32
d) π = 52
24. If 4π₯ = 48 what is the value of π₯3
?
a) 4 c) 9
b) 11 d) 12
25. The expression
5β2
4β2 evaluates to:
a) 52
b) 1625
c) 85
d) 6425
Kinross College Year 9 Mathematics Exam, Semester 1 2016 8
26. Four rectangles are shown below.
Which two are similar?
a) I and II b) II and III c) I and IV d) II and IV
27. This sign shows times that a car can be parked for up to 1 hour.
At which of these times is it permitted to park for two hours?
a) 11:00 am Thursday
b) 4:00 pm Thursday
c) 11:00 am Saturday
d) 4:00 pm Saturday
28. Which of the following is the larger number?
1 14
75
1.3
107
a) b) c) d)
Kinross College Year 9 Mathematics Exam, Semester 1 2016 9
Section 2: Written answer (Total 80 marks)
Mark/s
1. Factorise 88 β 16π₯.
1 Mark
2. Fill in the blanks for the following table:
Index form Expanded form
135
2.7 Γ 2.7 Γ 2.7 Γ 2.7
π 3π‘4
9 Γ π Γ π Γ π Γ π Γ π Γ π Γ π
4 Marks
3. Simplify the following, writing your answers in index form:
a) 35π8 Γ· 5π4
b) (π4)3
c) 6π4π7 Γ 8π6π
d) (2π4π)5
e) 5π‘0
f) 4β2
43
2 Marks
2 Marks
3 Marks
3 Marks
2 Marks
3 Marks
Kinross College Year 9 Mathematics Exam, Semester 1 2016 10
4. Jordan and Poppy invest $24000 in the ratio of 7:9.
How much does each person receive?
3 Marks
5. Solve these equations.
a) 11 = π₯ β 4
b) 8π₯β23
= 4π₯
2 Marks
3 Marks
6. Simplify the following:
a) 28π₯7π¦5
2π₯6π¦
b) 2π2π Γ 8ππ4 Γ· (2 ππ)3
2 Marks
3 Marks
Kinross College Year 9 Mathematics Exam, Semester 1 2016 11
7. What is the perpendicular height of the triangle, correct to the nearest centimetre?
4 Marks
8. What is the price paid for a Samsung Galaxy S3 if the selling price is $225 plus 10% GST?
2 Marks
9. Simplify.
a) β4π₯ Γ 5π¦
b) 7ππ21π
1 Mark
2 Marks
10. Morgan borrows $8 500 from his parents for his first car. He will be charged 2% simple interest over 2 years. How much money will Morgan owe in total?
2 Marks
Kinross College Year 9 Mathematics Exam, Semester 1 2016 12
11. Bree borrows $15 000 at 6% simple interest and is charged $4 500 interest in total for her loan. How many years was the loan taken over?
3 Marks
12. βπππ has been enlarged to produce βπππ .
What is the scale factor?
2 Marks
13. Write an expression for each of the following:
a) Five times the sum of π΄ and π΅
b) Its Fair day! You pay for four rides on the supernova at $π each and three rides on a rollercoaster at $π each.
1 Mark
1 Mark
14. Oscar is on a hike. From his starting point he intends to walk 8.4 km west to a large tree.
He discovers, after walking 9.2 km, that he is off course and is now due south of the tree, so he then walks due north to his destination.
How much further did he walk than he originally intended? Round all answers to 1 decimal place.
6 Marks
Kinross College Year 9 Mathematics Exam, Semester 1 2016 13
15. Simplify each of the following:
a) 2π + 4π‘ + 5π + 9π‘
b) 81π + 12π β 9π + 62π
c) 12π₯2π¦ β 3ππ β 12 π₯π¦2 + 14ππ
1 Mark
1 Mark
2 Marks
16. Fill in the blanks for the following expressions:
a) 2(π₯ + 4) = 2π₯ + ______
b) 5(π₯ β _____ ) = 5π₯ β 15
1 Mark
1 Mark
17. Jamie made a cake for the family to share. As soon as it was iced, Krystal and
Jamie each ate 16
of it, Michael ate 14
, and Eva and Michelle ate 112
each. What
fraction of the cake was left for the next day?
2 Marks
Kinross College Year 9 Mathematics Exam, Semester 1 2016 14
18. Prove that βπππ βΌ βπππ.
6 Marks
19. A fashion designerβs customised rectangular piece of fabric has a perimeter of
140 cm. It has a length of π₯ cm and a width of π¦ cm.
a) Write an equation for the perimeter of this piece of fabric.
b) Rearrange this equation to make π¦ the subject.
c) Use your answer to (b) to write an equation for the area of the fabric in terms of π₯.
d) Expand this equation. Simplify if possible.
e) Given that π₯ = 42 cm, find the area and width of the piece of paper.
END OF EXAMINATION
1 Mark
2 Marks
1 Mark
1 Mark
4 Marks
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