Consoli dated Chapter -wise questio ns

Chapte r 1: Number s and language: ( Summe r 2017-2020)

1. S 2020 p21
/'
2 Find the highest odd number that is a factor of 60 and a factor of 90.

2. S 2020 p22

~ 2 At noon the tempera ture in Maseru was 21 °C.

At midnigh t the tempera ture had fallen by 26 °C.

Work out the tempera ture at midnigh t

g,1-f).b ~
............................................. 0 C [I]

Write down

(•) a square number greater than 10,

···············l.~...... . .................. [1]

(b) an irrationa l number.

·················· · ~ ·················· fl]

7s2 02o p23

I 32 33 34 35 36 37 38 39

from this list of numbers, write down

(a) a multiple of 8,
32.
···············-··················- ····· . . [I]

(b) a square number,

[I]

(c) a prime number.

·--··-··················3 ··1.·············· [I]

.Y52 019p 21
31 32 33
,Y 12 27 28 29 30

From the list of numbers. write down

(a) a multiple of 7,

. . ... . .. ... .J. ~.. .. . . [II

(b) a cube number,

.fl.1.. . . . (II
······················

(c) a prime number.

6. S2019 p22
~
. mun ber between 50 and 60.
Write down a pnme
·········· ···2.3/. >.9.......... [I]
 -1

9 Find the highest common factor (HCF) of90 and 48.

·······-·····--··-·--···············-·-· [" 1

8. S2019 p23
7 1 Here is a list of numbers.

2J J
2
✓13 31 ✓ 121 51 0.7

from this list. write down

(a) a prime number.

······················ ····· ~ ·' ··············· [IJ

(b) an irrational number.

.. . . . .......fri: ... . . .. ll]

.# S2018p21
~ J Write down a prime number between 20 and 30.

...... ..... 'J 5/.~.9 .......[I]

10. S 2018 p22

/s 22 17 25 41 39 4

Work out the diflerence between the two prime numbers in the list above.

.l/1..-./ 9.=. 21f. ... [2]

~2018p23

One day in Ctuunonix the temperature nt noon was 6 °C.

At midnight the temperature wns 11 °C lower.

Write down the temperature at midnight.

6-11-=0
············································oc ll l

.C Complete the list of factors of 36.

'1. IL /'
I ' 2 • .:21··-~t···'Q.·····1 -✓ q i.1 12........ . . ... ....... .... ........... ... ....... . . , 36
····· ..1...{.. ... .. [21

~2018p32

Y J (a) find the value of

"'Y< the square root of 19044,

············································· [I]

2 7.

. .....(iii).. . ...
(h1

[I]

(b) n is an integer and 120 < 11 < 140·

Find the value of II when it is

a multiple of 45,
(ii.i:).. . .
(i)

II= .... l Il

(ii) a square number,

II = (ii;3.. . ......
....... I Il

(iii) a factor of 402,

11= •. ••• (ii;. . . .. (I]

(iv) a cube number.

11 = .. ...... ~ ····••ll]
 (t) Wonc out the value of 21 - 15 x 3
18 -:- 6-4 .

··················~ ·.. ·········· [2]

(d) Estimate the \•aJue of 19.2 x v'SM
31.6 -;- 6.32 by rounding each number in the calculation to I significant
figure.

Show all your working by filling in the calculation below.

·········-'2<?... X -J ..... 9.......... -

.............3-9. -:- ···········6 ·····
- ....~=®
5 ............. [2]

13. S 2018 p33

I (a) The table shows the temperature at Lcxford Station at IOOO each day for a week.

Day Mon Tue Wed Thu Fri Sat Sun

Temperature
(OC) -3 4 -I 0 -5 2 I

(i) Writ.e down the day which had the coldest temperature.

. EJj ·· [I]

(ii) Wo.r k out the difTerenc.e in the temperature between Monday a.n d Tuesday.

. . . . . . . . <:i_;.... . . 0
C[ I I

(iii) TI1e temperature falls 6°C from IOOO to midnight on Sunday.

Work out t.hc temperature a t midn ight.

...... l-6-:~ ·c111

I 14 . ( S 2017 21)
4 Th e tab le sh ow s
the tem pe rat ure s in
fiv e pla ce s at 10 am

Pla ce
on e da y in Jan ua ry.

Te mp era tur e (°C )

I lel sin ki
-7
Ch ica go
- 10
Lo nd on
3
fl.1osc ow
-4
Ba ng ko k
26
(a) W hic h pla ce wa s the
co lde st?

(b ) At 2 pm the tem pe rat ···········~

ure in I lel sin ki ha d ······•• l'l
inc rea sed by 4 °C .
W rit e do ,,'I \ the tem
pe rat ure in H els ink
i at 2 pm .

.....-J ,_r;
........-1.....-t....t....-=-~ °C l 11

15 . ( S 20 17 23)

3 Find the lowest comm

on multip le (LCM) of 20 and 24
.
~{:);;: ~x f)_xs
#Lf::: ~ X 2 X 2 f5

16 . June 20 24 / 23

Write the nu mb er tw
o mill ion tw o tho us an
d and tw o in figures .

0
[I]
 17. May/June 2023/21
By writing each number in the calculation correct to I significant figure, work out an estimate for the
value of
6.7x2.I
18 - 5.9 .
Jx2 _ /4 :::i
f)..CJ-6 It;
You must show all your working.

18. a. Brighton temperature is -7'C and London is colder by 9°C. Find London's Temperature. -7 - CJ~
b. how many degrees Celsius between -4°C and 13°C.

(ij)c
19. Write 120 as a product of its prime factors

;f)o ~ 9-xzx2.x:sx s

20. Round the following to the given_J?laces.

a. 0.007136 ( 3sf) 0 , 00 119
b. 536 (lsf) 5oO 7S
-::J
c. 234.565 (2dp) ~ 3 L/'
d. 784.567 (nearest whole number) --:;-g i;
e. 37 ( nearest 100) 0
f. 5785 , nearest 1000, Gooo
21. Find the LCM of 12 and 20

' ~ -==- 9-,x 2-X 5

£,;; .:: ?-x 2,x s
 9
22. The prime factors of 10= 2 x 5 20= 2x2x5 and 30= 2x 3 x 5. Find the LCM of the three numbers.

-2 X3'1'&r;.)
:_:@ L Crl ~ 4-'<: r; ,x. .2 x-3' ~
30 : :
J.
1- 0

23. Simplify
~
a. 4° -6 + 15 1. -6 +/ q = Q
b. (-3)2 + G)-3 q 1-(+Y = 9+:o-€
r ~

to I
3 X

24. Evaluate using the order of operation.

24 X 5 + 20 + 9 X 12 + 36 - 6 =
a. L---' G
I 2.D "7 2o+9 )( I '2. -::-'..s £ -
6 T I ffl' -i- ]6 - 6~ ~1
6 f- 3 -6 - ~
b. 18 - 4 + 22 X 10 =
l& - lf 7 t_;x/ o
I ..J

I ~ --- l-I x l!j

1 &" - I CJ