SEAMO 2018 Paper B © TCIMO 1 1 Find the next number in the sequence 5611, 111223, 232447, (A) 232495 (B) 464793 (C) 474895 (D) 474896 (E) None of the above 4 How many cubes are there in the figure bel[.]
Trang 21 Find the next number in the sequence
5611, 111223, 232447, …
(A) 232495
(B) 464793
(C) 474895
(D) 474896
(E) None of the above
4 How many cubes are there in the figure below?
(A) 20 (B) 22 (C) 23 (D) 24 (E) 25
2 Find perimeter of the figure below
(A) 38
(B) 42
(C) 44
(D) 46
(E) None of the above
5 In the following additions, each letter represents a different digit
Find -./011111111
(A) 8370 (B) 9464 (C) 8371 (D) 9465 (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) $35 and $21
(B) $35 and $23
(C) $40 and $21
(D) $40 and $23
QUESTIONS 1 TO 10 ARE WORTH
3 MARKS EACH
Trang 36 Pine trees are planted at equal
intervals of 16 m along a straight road,
including both ends of the road If the
road is 960 m long, how many pine
trees are there altogether?
(A) 56
(B) 58
(C) 59
(D) 60
(E) 61
8 There are 14 children at a party
If each child shakes hands with each other exactly once, how many handshakes will take place?
(A) 75 (B) 85 (C) 87 (D) 89 (E) 91
9 When 925 is divided by 8, the quotient
is 35 and the remainder is 15 Find 8
(A) 23 (B) 25 (C) 26 (D) 27 (E) None of the above
7 The numbers 1, 2, 3, … , 9 is to be filled
in each circle, such that the sum of
numbers along each line is 9 Find 9
(A) 25
(B) 26
(C) 22
(D) 34
(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 number of balls to be removed, without replacement, to obtain at least 4 balls of different colours
(A) 86 (B) 76 (C) 75 (D) 66 (E) 67
Trang 411 Find the missing number in the
number puzzle below
(A) 5
(B) 7
(C) 4
(D) 8
(E) None of the above
13 Teacher Ali has a bag of sweets If he gives each student 4 sweets, he will
be left with 4 sweets If he gives each student 5 sweets, he will be short of 7 sweets How many sweets does Teacher Ali have?
(A) 45 (B) 46 (C) 47 (D) 48 (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 every wrong answer, 4 marks are deducted If John scored a total of
72 marks, how questions did he answer wrongly?
(A) 2 (B) 3 (C) 4 (D) 5 (E) 6
12 Peter has a total of 100 chickens and
rabbits on his farm If the animals
have 260 legs altogether, how many
chickens are there on the farm?
(A) 40
(B) 50
(C) 60
(D) 70
(E) 80
QUESTIONS 11 TO 20 ARE WORTH
4 MARKS EACH
Trang 515 Cindy’s father is 4 times older than
her Three years ago, both their ages
added up to 49 How old are Cindy
and her father, respectively, this
year?
(A) 10 and 45
(B) 11 and 44
(C) 12 and 46
(D) 9 and 36
(E) None of the above
17 The diagram below shows a rectangle
of length 36 cm It contains two shaded regions and 7 identical small rectangles Find the area of one small rectangle, in cm;
(A) 98 (B) 120 (C) 144 (D) 156 (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,
he gave 30 stamps to his cousin and
was left with 40 stamps How many
stamps did he have at first?
(A) 284
(B) 304
(C) 322
(D) 354
(E) None of the above
18 Train - left Town < for Town =, at a speed of 60 km/h 1h later, Train left Town < for Town = , at a speed of
75 km/h How many hours did Train take to catch up with Train -?
(A) 2 h 30 min (B) 3 h
(C) 3 h 30 min (D) 3 h 45 min (E) 4 h
Trang 619 In the diagram below, the topmost
layer has 60 circles How many
circles are there altogether?
(A) 1750
(B) 1780
(C) 1830
(D) 1880
(E) None of the above
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?
23 Many years ago, there were
5 Saturdays in the month of February
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
area 6 cm; What is the area of IJKL?
(A) 49 cm;
(B) 51 cm;
(C) 62 cm;
(D) 53 cm;
(E) 58 cm;
24 Jane walked from her house to Peter’s
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? QUESTIONS 21 TO 25 ARE WORTH
6 MARKS EACH
Trang 725 In the diagram below, -./0 is a
square of side 4 cm 0IJK is a
rectangle I-J is a straight line
Given that /K = 3 cm and 0K = 5 cm ,
find the length of 0I in cm
End of Paper
Trang 8SEAMO 2018
Paper B – Answers Multiple-Choice Questions
Questions 1 to 10 carry 3 marks each
Questions 11 to 20 carry 4 marks each
Free-Response Questions
Questions 21 to 25 carry 6 marks each