O level P1

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    1 (a) Express ]5 as a percentage.

    Answer (a) % [1]

    (b) Express 171% as a fraction in its simplest form.

    3 Factorise fully 3x3 - 12xY.

    For

    Examiner's

    Use

    Answer (b) [1]

    Answer [2]

    Answer [2]

    Answer all the questions.

    3.93

    (7.47 +3.02) 5.67

    Give your answer correct to 2 significant figures.

    Calculate2

    For

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    For

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    Use

    4 (a) Given that

    (b) Simplify 1 +- 2x-5

    find k.

    Answer (a) k= [1]

    Answer (b) [1]

    Exa

    5 The temperature, in DC, at noon, on three successive days was -3, 5 and t.Find an expression, in terms of t, for

    (a) the difference in temperature between the first and third days,

    Answer (a) DC [1]

    (b) the mean temperature for the three days.

    Answer (b) 0 C [1]

    6 A sum of money was divided between A, Band C in the ratio 2 : 3 : 4.

    If, instead, this money had been divided equally between them, A would have received an

    extra $20.

    What was the total sum of money?

    Answer $ [2]

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    Show your solution on the number line below.

    8 Solve the inequality -2 ~ 2x +4

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    1111111111111111111111111111111111111111111111111111111

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    9 In the diagram, A, Band C

    lie on a circle, centre O.

    The tangents at A and C

    meet at T.

    Angle OAC == 28.

    Find

    (a) AGC,

    (b) ABC,

    Answer (a) AOC == [1]

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    Examin

    Use

    Answer (b) ABC == [1]

    (c) ATe.

    Answer (c) ATC == [1]

    10 Written as the product of its prime factors 4900 == 22 x 52 x 72.

    (a) Express 168 as the product of its prime factors.

    Answer (a) 168 == [1]

    (b) Hence write down

    (i) the LCM of 4900 and 168, giving your answer as the

    product of its prime factors,

    *.

    Answer (b)(i) [1]

    (ii) the greatest integer that will divide both 4900 and 168 exactly.

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    Answer (a) [I]

    Answer (c) [1]

    Answer (a) [1]

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    Answer (c) [1]

    Answer (b) [1]*,

    List the elements in

    (a) the total of the three numbers shown is 18,

    Answer (b) [1]

    (b) the three dice show the same number,

    (a) A',

    (c) AU B.

    (c) the total of the three numbers shown is 17?

    (b) An B,

    12 cg = {x is an integer: -3 ~ x ~ 3}

    A = {x: -3 < x

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    1111111111111111111111111111111111111111111111111111111

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    13 The volume, V, of a given mass of gas is inversely proportional to the pressure, P.

    When V =3 m3, P =200 N/m2.

    (a) Find V when P =150 N/m2

    Answer (a) m3 [2]

    (b) Find the pressure when the volume is 5m3.

    Answer (b) N/m2 [1]

    14 The speed of Iight is 3 x 105 km/s.

    (a) Express this speed in metres per second.

    Give your answer in standard form.

    Answer (a) m/s [1]

    (b) How long does light take to travel one metre?

    Express this answer in nanoseconds.

    Answer b nanoseconds 2

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    Answer (b) [1 ]

    Answer (a)

    (b) Explain what your answer to (a) represents.

    For

    Examiners

    Use

    [2]

    Answer (a) [2]

    1

    2x- 3

    2x

    (2x - 3)2

    Won Drawn Lost Points

    City ( ~2 ~)Won

    ( 0United 6

    Drawn

    Lost

    (a) Find ( ~2 ~)0)-6

    (b) Simplify

    3a2 . 9a16 (a) Simplify tbc -:-14b .

    15 The matrices below show the results for two football teams and the points awarded.For

    Examiners

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    Answer (b) [2]

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    For

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    17 The graph shows Alison's journey from home to school.She left home at 0800, walked to the bus stop and travelled the rest of the way on the bus.

    For

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    Use

    Answer (d)

    (d) Alison's brother, Sam, also left home at 0800.

    He 'cycled to school at a constant speed of 20 km/h.

    Show his journey on the above graph.

    (b) How far was she from school at 0815?

    [1]

    08200815

    Answer (a) minutes [1]

    Answer (b) km [I]

    Answer (c) km/h [1]

    0810Time

    0805

    1

    Home 0

    0800

    6

    School5

    4

    Distance from

    home (km) 3

    2

    (c) Find the speed ofthe bus.

    (a) How long did she wait at the bus stop?

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    Answer (c) The performed better because .

    (c) Explain briefly whether the boys or the girls performed better in the test.

    18 Twenty boys and fifteen girls took a Mathematics test.

    The marks are shown in the stem-and-Ieaf diagram.For

    Exominer

    Use

    Girls

    8

    8 9 9

    4 7 8 9

    3 5 6 8 9

    0

    Key (Girls)

    318 means 38

    3

    4

    6

    7

    5

    2

    9

    2

    o 8

    o2

    5

    45

    4

    5

    5

    Key (Boys)

    913 means 39

    Boys

    ........................................................................................................................ [1]

    Answer (a) [1]

    Answer (b) [1]

    8

    9

    5

    9

    7

    (a) Write down the mode of the boys' marks.

    (b) Write down the median of the girls' marks.

    7

    For

    rominers

    Use:

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    For

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    19 (a) Sketch the graph of y = 4 - (x - 1)2.

    Answer (a)

    (b) (i) Sketch the graph of y = (x - I)(x +4).

    Answer (b)(i)

    y

    o

    y

    o

    x

    x

    [2]

    [2]

    (ii) Write down the equation of the line of symmetry of y = (x - 1)(x +4).

    Answer (b )(ii) [l]

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    (a) Find the area of triangle ABC.

    20 A, Band C are the points (3, 1), (6, 1) and (9, 5).For

    Examiner

    Use

    10 X8642o

    Answer (b) ( , ) [2]

    Answer (a) units2 [1]

    2

    ............................

    Ai

    y

    8 T" ~ f..T..T.., T' ; : .[""[":TTr..: : --:- .

    6 i11:]lilk4 ijt!T-r : ! : .

    Answer (c) k = or [2]

    2 :.~tI-r j : ( : .- ! [""["I"]""T rr--:-...

    r[T:..TTrrr:-4 ;trt:..i!:t:

    ......... ~ ~ ~ ~ ,.~ i ~ ; ; ~

    -6 ~ ; :. ; ; ; : ~ :

    (b) ABCD is a trapezium with AB parallel to DC.

    The area of the trapezium is 14 units2.

    Find the coordinates of the point D.

    (c) E is the point (2, k) and the area of triangle ABE is 9 units2.

    Find the two possible values of k.

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    taminers

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    For

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    21 A man walks 1000 m at an average speed of 4 km/h and then runs 1.3 km in 5 minutes.

    CalculateFor

    Examine

    Use

    (a) the time, in minutes, he takes to walk the 1000 m,

    Answer (a) minutes [1]

    (b) his running speed in kilometres per hour,

    Answer (b) km/h [2]

    (c) his average speed for the whole distance.

    Answer (c) km/h [2]

    22 Given that n is an integer,

    (a) write down expressions for the next two odd numbers after 2n - 1,

    Answer (a) and [1]

    (b) (i) find, in its simplest form, the expression for the sum of these three odd numbers,

    Answer (b)(i) [1]

    (ii) explain why the sum is a multiple of 3,

    Answer (b)(ii) .

    ....................................................................................................... [1]

    (c) fiQd, in its simplest form, an expression for the sum of the squares of these three odd

    numbers.

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    (a) Show that triangles ALB and NLD are similar.

    ........................................................................................................................ [2]

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    A

    Answer (d)(i) [1]

    Answer (d)(i i) [1]

    Areaof~MLBArea of~ALD

    Areaof~ABL

    Area of ~ ADL '

    Answer (c) and [1]

    Answer (a) In ~s ALB and NLD .

    Answer (b) [1]

    (ii)

    (iii)

    (c) Name two triangles that are congruent.

    (b) Name a triangle similar to triangle NCM.

    (d) Given that DL = 3LB, find

    (i) ABCN'

    N

    s a para e ogram an s a po nt on .

    The line AL produced meets BC at M and DC produced at N.For

    Examiner's

    Use:

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    24 Three points A, Band C are shown below.For

    Examiners

    UseAnswer (a), (b) and (d)

    For

    Examine r

    Use

    C

    B

    (a) Construct the perpendicular bisector ofBe. [1]

    Answer (c) The point P is equidistant from the lines : and .

    and equidistant from the points and . [1]

    (d) The point D is such that BCD = 1300 andAD = 7.5em.

    Find the two possible positions of D and label them D) and D2

    [2]

    [1]

    (c) These two bisectors meet at P.

    Complete the statement below.

    (b) Construct the bisector of angle ABe.

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