QUESTIONS 1 TO 10 ARE WORTH
3 MARKS EACH
4. How many cubes are there in the figure
below?
1. Find the next number in the sequence
5611, 111223, 232447, …
(A) 232495
(B) 464793
(C) 474895
(D) 474896
(A) 20
(E) None of the above
(B) 22
(C) 23
2. Find perimeter of the figure below.
(D) 24
(E) 25
5. In the following additions, each letter
represents a different digit.
(A) 38
11111111.
Find -./0
(B) 42
(C) 44
(D) 46
(E) None of the above
3. 6 footballs and 3 basketballs cost $279.
2 footballs and 3 basketballs cost $139.
Find the prices of a football and a
basketball, respectively.
(A) 8370
(B) 9464
(A) $35 and $21
(C) 8371
(B) $35 and $23
(D) 9465
(C) $40 and $21
(E) None of the above
(D) $40 and $23
(E) None of the above
SEAMO 2018 Paper B © TCIMO
1
6. Pine
trees
are
planted
at
equal 8. There
are 14 children
at
a
party.
intervals of 16 m along a straight road,
If each child shakes hands with each
including both ends of the road. If the
other
road is 960 m long, how many pine
handshakes will take place?
exactly
once,
how
many
trees are there altogether?
(A) 75
(A) 56
(B) 85
(B) 58
(C) 87
(C) 59
(D) 89
(D) 60
(E) 91
(E) 61
9. When 925 is divided by 8, the quotient
is 35 and the remainder is 15. Find 8.
7. The numbers 1, 2, 3, … , 9 is to be filled
in each circle, such that the sum of
(A) 23
numbers along each line is 9. Find 9.
(B) 25
(C) 26
(D) 27
(E) None of the above
10. There are 15 red, 20 white, 25 black
and 40 yellow balls in bag. Without
looking into the bag, find the least
(A) 25
(B) 26
number
of
balls
to
be
removed,
without
replacement, to obtain
at
least 4 balls of different colours.
(C) 22
(D) 34
(A) 86
(E) None of the above
(B) 76
(C) 75
(D) 66
(E) 67
2
SEAMO 2018 Paper B © TCIMO
13. Teacher Ali has a bag of sweets. If he
QUESTIONS 11 TO 20 ARE WORTH
4 MARKS EACH
11. Find the
missing number in
gives each student 4 sweets, he will
the
be left with 4 sweets. If he gives each
number puzzle below.
student 5 sweets, he will be short of 7
sweets.
How
many
sweets
does
Teacher Ali have?
(A) 45
(B) 46
(C) 47
(A) 5
(D) 48
(B) 7
(E) None of the above
(C) 4
(D) 8
(E) None of the above
14. There is a total of 15 questions in a
mathematics test. For every correct
answer, 8 marks will be awarded. For
12. Peter has a total of 100 chickens and
every wrong answer, 4 marks are
rabbits on his farm. If the animals
deducted. If John scored a total of
have 260 legs altogether, how many
72 marks,
chickens are there on the farm?
answer wrongly?
(A) 40
(A) 2
(B) 50
(B) 3
(C) 60
(C) 4
(D) 70
(D) 5
(E) 80
(E) 6
SEAMO 2018 Paper B © TCIMO
3
how
questions
did
he
15. Cindy’s father is 4 times older than 17. The diagram below shows a rectangle
her. Three years ago, both their ages
of
length 36 cm .
It
contains
two
added up to 49. How old are Cindy
shaded regions and 7 identical small
and her father, respectively, this
rectangles. Find the area of one small
year?
rectangle, in cm; .
(A) 10 and 45
(B) 11 and 44
(C) 12 and 46
(D) 9 and 36
(E) None of the above
16. Mark had some stamps. He gave
10 less than half of his stamps of to
Shaun. Then, he gave 6 more than
half the remainder to Cindy. Finally,
(A)
98
(B)
120
(C)
144
(D)
156
(E) None of the above
he gave 30 stamps to his cousin and
was left with 40 stamps. How many
stamps did he have at first?
18. Train - left Town < for Town =, at a
speed of 60 km/h. 1h later, Train . left
(A) 284
Town < for Town = , at a speed of
(B) 304
75 km/h. How many hours did Train .
(C) 322
take to catch up with Train -?
(D) 354
(E) None of the above
4
(A)
2 h 30 min
(B)
3 h
(C)
3 h 30 min
(D)
3 h 45 min
(E)
4 h
SEAMO 2018 Paper B © TCIMO
19. In the diagram below, the topmost
layer
has 60 circles.
How
QUESTIONS 21 TO 25 ARE WORTH
6 MARKS EACH
many
circles are there altogether?
21. A new operation is defined as
B⊚D = 5×B−3×D
Given that 14 ⊚ D = 13, find the value of D.
22. Alan wrote on the whiteboard
1, 2, 3, 4, 5, … , 173
How many times did he write the digit
‘7’ altogether?
(A) 1750
(B) 1780
23. Many
(C) 1830
years
ago,
there
were
5 Saturdays in the month of February.
(D) 1880
(E) None of the above
On which day of the week was the last
day of that year?
20. The diagram shows a square -./0 of
side 10 H8 and a shaded rectangle of
24. Jane walked from her house to Peter’s
;
area 6 cm . What is the area of IJKL?
at a speed of 80 m/min. At the same
time, Peter walked from his house to
Jane’s at a speed of 60 m/min. They
met 15 m from the mid-point of the
two houses.
How far is Jane’s house from Peter’s?
(A)
49 cm;
(B)
51 cm;
(C)
62 cm;
(D)
53 cm;
(E)
58 cm;
SEAMO 2018 Paper B © TCIMO
5
25. In the diagram below, -./0 is a
square
of
side 4 cm . 0IJK is
rectangle. I-J is
a
straight
a
line.
Given that /K = 3 cm and 0K = 5 cm ,
find the length of 0I in cm.
End of Paper
6
SEAMO 2018 Paper B © TCIMO
SEAMO 2018
Paper B – Answers
Multiple-Choice Questions
Questions 1 to 10 carry 3 marks each.
Q1
C
Q2
D
Q3
B
Q4
B
Q5
C
Q6
E
Q7
A
Q8
E
Q9
C
Q10
A
Questions 11 to 20 carry 4 marks each.
Q11
A
Q12
D
Q13
D
Q14
C
Q15
B
Q16
A
Q17
C
Q18
E
Q19
C
Q20
D
Free-Response Questions
Questions 21 to 25 carry 6 marks each.
© SEAMO 2018
21
22
23
24
25
19
31
THURSDAY
210 m
3.2 cm
Paper B
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