PL BM P6L27 Sem 1 Review 4 Paper 1 WS - errata (1)

Primary 6

Boost! Math

Name Sem 1 Review 4 Paper 1 (Lesson 27)
Tutor Sem 1 Review 4 Paper 1 (Lesson 27)
Topic

Primary 6: Boost! Math

Review 4 Paper 1 45

Section A (20 marks)
Questions 1 to 10 carry 1 mark each. Questions 11 to 15 carry 2 marks each.
For each question, 4 options are given. One of them is the correct answer.
Make your choice (1, 2, 3 or 4) and write it in the brackets provided.

1. Simplify 10p + 22 – 4p - 8 ()

(1) 6p + 14
(2) 6p +30
(3) 14p + 30
(4) 32p - 12

2. Yen Lin poured 3 litres of orange juice equally into 4 jugs. How many millilitres of
orange juice were there in each jug?

(1) 0.75 ml ( )
(2) 7.5 ml
(3) 75 ml
(4) 750 ml

3. Mr Tan bought a rope 13 m long. It is 8 times as long as a rod. How long is the rod?

4 ()
(1) 19 m

5
(2) 18 m
(3) 104 m
(4) 117 m

1

Primary 6: Boost! Math

4. Peter can either put 32 large bottles or 56 small bottles into a large container. What is
the maximum number of small bottles that he can put into the container if he has
already placed 20 large bottles in the container?

(1) 36 ()
(2) 24
(3) 21
(4) 12

5. Elaine, Fiona and Cassie shared a cake. Elaine ate 1 of the cake. Fiona ate 1 of the
5 10

cake less than Elaine and Cassie ate the rest of the cake. What fraction of the cake

did Cassie eat?

(1) 1
10

(2) 3
10

(3) 5
10

(4) 7 ()
10

6. 60% of Ben’s savings is equal to 25% of Tricia’s savings. What is the ratio of Ben’s
savings to Tricia’s savings?

(1) 12 : 5 ()
(2) 5 : 12
(3) 1 : 3
(4) 3 : 1

7. Mrs Tan mixed the flour, raisins and eggs in the ratio of 6 : 3 : 1 to make raisin buns.
Every 100g of the mixture could make 14 raisin buns. Mrs Tan used 720 g of flour in
her mixture, how many raisin buns can she make?

(1) 168 ()
(2) 240

(3) 336
(4) 744

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Primary 6: Boost! Math

8. Study the following pattern. What is the 62th shape?

1st ()

(1)

(2)
(3)
(4)

9. The graph below shows the favourite ice creams of a group of students.

The data for chocolate ice cream is not shown.

5 of the students chose mango, vanilla and strawberry as their favourite ice creams.
12

How many students chose chocolate ice cream as their favourite ice cream?

NUMBER OF STUDENTS 14
12
10 Vanilla Strawberry Chocolate
8
6 ICE CREAM FLAVOUR
4
2 ()
0

Mango

(1) 25
(2) 35
(3) 40
(4) 60

3

Primary 6: Boost! Math

10. Sandra ate 1 of a large cake, kept 1 of the cake for the next day and gave 34of the
9 3
remaining cake to Dennis.

What fraction of the cake did Sandra have left?

(1) 4
9

(2) 5
9

(3) 5
12

(4) 5 ()
36

11. Connie, Huiling and Sean shared a sum of money. The ratio of the amount of money
Connie had to the amount of money Huiling had was 3 : 5. The ratio of the amount of
money Huiling had to the amount of money Sean had was 2 : 7.
If Connie had $30, how much money did Sean have?

(1) $50 ()
(2) $70
(3) $150
(4) $175

12. In the figure below, PQ is parallel to SR and PTR cuts ∠QRS equally. PTR and QTS
are straight lines. Given that ∠PQS = 65° and ∠PTS = 107°. Find ∠QRS.

P Q
107° 65°

T

SR

(1) 84° ()

(2) 73° 4
(3) 56°
(4) 42°

Primary 6: Boost! Math

13. A rectangular piece of paper was folded at both ends to form the shape below. Find
the perimeter of the rectangular piece of paper.
5 cm
3 cm

1 cm 8 cm

(1) 25 cm ()
(2) 40 cm
(3) 44 cm
(4) 54 cm

14. Susan had some rulers and erasers in the ratio 2 : 5. After giving away half of her
erasers, Susan had 630 erasers and rulers left.
How many erasers did she have at first?

(1) 126 ()
(2) 180
(3) 315
(4) 700

15. Jerrod bought some candies to give to his friends. His sister ate 14 of them. His
mother then gave him the same number of candies that he had left. He packed the
candies into 13 goodie bags. Each goodie bag contained 8 candies.
How many sweets did Jerrod buy?

(1) 52 ()
(2) 66
(3) 104
(4) 118

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Primary 6: Boost! Math

SECTION B: (5 marks)
Questions 16 to 20 carry 1 marks each. Show your working clearly in the space
provided for each question and write your answers in the spaces provided.
For questions which require units, give answers in the units stated.
16. Find the value of 2 x 8 + (20 – 8) ÷ 4.

Ans:
17. Find the area of a quadrant of diameter 40 cm. (Take = 3.14)

Ans: cm2

18. ABC is an isosceles triangle.AB=AC. BDC is a straight line. ∠ACD = 48° and
∠DAC = 15° Find ∠BAD.

A
15°

48°
B DC

Ans : °

6

Primary 6: Boost! Math

19. Mrs Tan cuts a 9-m long string into shorter lengths of 27m. What was the length of
the string did Mrs Tan have left?

Ans : m

20. Marcus bought 8h pens. He gave 4 pens to each of his friends and had 3h pens
left. Express the number of friends Marcus had in terms of h.

Ans :

Section C ( 20 marks)
Questions 21 to 30 carry 2 marks each. Show your working clearly in the space
provided for each question and write your answers in the spaces provided.
For questions which require units, give answers in the units stated.

21. Mrs Tan bought a bag at $120 after she was given a 25% discount. Mrs Samuel
bought the same bag at $100 at another store during another sale. What was the
percentage discount given to Mrs Samuel if the original price of the bag was the
same?

Ans : %

7

Primary 6: Boost! Math

22. Alice had a carton of orange juice. She drank an equal amount of orange juice
1

each day. At end of Day 7, she had 2 of the carton left. At the end of Day 10, she
had 600 ml of juice left. How much orange juice did she have at first?

Ans : ml

23. Look at the diagram carefully. The ratio of the area of one of the faces of Cube P
to that of Cube Q is 9 : 1. Find the volume of Cube P.

P
Q

3 cm

Ans : cm3

24. 18 boys and some girls took part in the Math Quiz. The boys scored an average
of 72 marks. The girls scored an average of 81 marks. The average score of the
children was 78 marks. How many children took part in the Math Quiz?

8Ans :

Primary 6: Boost! Math

25. What fraction of the figure is shaded?
1 cm

1 cm

Ans :

26. In the figure below, ABCD is a square and AED is an equilateral triangle.
Find ∠ BED.

AB

E C
D

Ans : °

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Primary 6: Boost! Math

27. The figure below is a rectangle. The ratio of the area of A to the area of B is 5 : 9.
What is the ratio of the area of C to the area of A ?
B
C
A

Ans :
28. Peaches were sold at $1.60 each or 2 for $3. What was the maximum number

of peaches that Sharon could buy with $13.60?

1 for $1.60
2 for $3

Ans :

10

Primary 6: Boost! Math

29. The figure below is made up of a large semicircle and a small semicircle. The
radius of the large semicircle is twice the radius of the small semicircle. Find the
shaded area. (Take = 22 )
7
28 cm

Ans : cm2

30. The graph below shows John’s savings from September to December.

400

350

JOHN’S SAVINGS 300

250

200

150

100

50

0 October November December
September

MONTHS

(a) In which month was there a decrease in John’s savings?
(b) What was the percentage increase in John’s savings in October compared

to September?

Ans : (a) 11
(b)