PL BM P5L28 Review 3 Paper 2 WS - errata

Primary 5

Boost! Math

Name Semester 1 Review 3 Paper 2 (Lesson 28)
Tutor Semester 1 Review 3 Paper 2 (Lesson 28)
Topic

Primary 5: Boost! Math

Semester 1 Review 3 Paper 2 55

Paper 2 (55 marks)
Questions 1 to 5 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 your answers in the units stated. (10 marks)

1. Sharon bought 3 3 kg of strawberries. The strawberries cost $9.80 per kilogram.
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How much did Sharon pay for the strawberries?

Ans : $
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2. Mrs Tan earned $5103 a month. She spent 9 of her salary and an additional $100
on food and transport. She saved the rest of her salary.
How much did she save a month?

Ans :

1

Primary 5: Boost! Math

3. The length of the soccer field is 68 m. the length of the soccer field is thrice of its
breadth. What is the breadth of the soccer field? Express your answer as a mixed
number.

Ans : m

4. Henry and Sean shared some marbles in the ratio of 1 : 2. When Henry gave Sean
32 marbles, Sean had thrice as many marbles as Henry. How many marbles did
Sean have in the end?

Ans :

5. The figure consists of 2 squares. The length of the smaller square is 6 cm and it is 1
2
Q
of the length of the bigger square.

What is the area of the shaded triangle PQR? 6 cm

PR

Ans : cm2

2

Primary 5: Boost! Math

For questions 6 to 17, show your working clearly in the space provided for each question
and write your answers in the spaces provided. The number of marks allocated is shown in
brackets [ ] at the end of each question or part-question.

(45 marks)

6. The figure below is made of rectangle A and square B overlapping each other.

The ratio of the area of A to the area of B is 21 : 16. The shaded area is 24 cm2.

The shaded area is 2 of the area of A. Find the length of B?
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A

B

Ans : [3]

3

Primary 5: Boost! Math

7. A rectangular tank measuring 48 cm by 30 cm by 24 cm was filled with 14.4 ℓ of water.
More water was poured into the tank until it was 78full.
Find the height of the water that was poured into the tank.

Ans : [3]

8. Nathan had some money.After spending $714 on a camera and 2 of his remaining
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money on a watch, he had 41 of the total amount of money left.
How much money did he have at first?

Ans : [3]

4

Primary 5: Boost! Math

9. An admission ticket to the zoo cost $19. For every 10 tickets sold, 3 additional
ticket were given free. Find the total cost of tickets for a group of 215 visitors.

Ans : [3]

10. The area of the rectangle PQRS is 720 cm2. The area of triangle SUR is

120 cm2. Find the area of the shaded triangle STU.

PT Q

U

SR

Ans : [3]

5

Primary 5: Boost! Math

11. Joyce, Serene and Linda shared $653.After Joyce gave $75 of her money to
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Serene, Joyce had 5 as much money as Serene. In the end, Linda had $68 more
than Serene.

(a) How much money did Serene have at first?
(b) How much money did Linda have?

Ans : (a) [2]
(b) [2]

12. Susan bought an equal number of peaches and apples. She spent $39 on the
peaches and apples. How many apples did she buy?

Peaches apples
2 for $3 3 for $2

Ans : [4]

6

Primary 5: Boost! Math

13. At a sale, Cindy spent3 of her money. Tracy spent 4 of her money and Valerie
59

spent $45. They then had the same amount of money left. Cindy and Valerie had
$605 at first. How much money did the 3 girls have at first?

Ans : [4]

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Primary 5: Boost! Math

14. The ratio of Sharon’s money to Helen’s money is 3 : 5. Sharon’s father gave her
$154 and Helen bought 2 similar dresses that cost $77 each. The ratio of
Sharon’s money to Helen’s money then became 2 : 1.

(a) How much money did Sharon have at first?
(b) How much money did Helen have at first?

Ans : (a) [2]
(b) [2]

8

Primary 5: Boost! Math

15. Simon had some $10-notes, $5-notes and $2-notes in the ratio of 12 : 5 : 3. The
total value of his $10-notes was $4332 more than total value of $2-notes.
(a) How many $10-notes did Simon have at first?
(b) What was the total value of Simon’s $5- notes?

Ans : (a) [2]
(b) [2]

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Primary 5: Boost! Math

16. A rectangular tank measures 30 cm by 18 cm by 36 cm. After 8 buckets and 4
jugs of water were poured into the empty tank, the height of the water became 12
cm.

(a) What was the volume of water in the tank?

(b) If 72 jugs of water were needed to fill the rest of the tank completely, how
many buckets of water is needed to fill the tank completely?

(c) What was the capacity of one bucket?

Ans : (a) [1]
(b) [3]
(c) [1]

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Primary 5: Boost! Math

17. John spent 1 of his money and an additional $10 on a file. He then spent 37of his
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remaining money and an additional $14 on a pair of pants. He then spent $8 on

snacks and had $34 left. How much money did John have at first?

Ans : [5]

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