O level P1
Transcript of 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.
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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
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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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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.
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[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
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Answer (b) [2]
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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.
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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
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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.
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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
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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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21 A man walks 1000 m at an average speed of 4 km/h and then runs 1.3 km in 5 minutes.
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(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
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24 Three points A, Band C are shown below.For
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For
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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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