primary 6 february review 4 50 - talkingmaths · 2013. 2. 7. · 1 p6/feb/review4 primary 6...

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Primary 6

February Review 4

Section A: 10 Questions, 15 marks

Questions 1 to Questions 5 carry 1 mark each. Questions 6 to Questions 10

carry 2 marks each. Choose the correct answer and write it in the bracket

provided. Calculators are not allowed in this section.

1. Express

as a decimal.

(1) 7.8 (2) 7.08

(3) 0.78 (4) 0.078 ( )

2. The mass of a durian is about _______________.

(1) 5 g (2) 5 kg

(3) 50 g (4) 50 kg ( )

3. The total area of 2 similar squares is 128 cm². What is the length of one side of

the square?

(1) 32 cm (2) 16 cm

(3) 8 cm (4) 4 cm ( )

4. Thomas is paid $40 for working 8 hours. At this rate, how many hours must he

work to earn $480?

(1) 12 (2) 60

(3) 96 (4) 160 ( )

50


5. Which of the following figures below is symmetric?

(1) (2)

(3) (4)

( )

6. The number of members in a club increased from 800 to 1000 over a year.

What was the percentage increase in the number of members for this period?

(1) 20% (2) 25%

(3) 80% (4) 125% ( )

7. If A : B = 4 : 7 and B : C = 5 : 9, what fraction of A is C?

(1)

(2)

(3)

(4)

( )

8. A tank with a length of 20 cm and a breadth of 30 cm contained some

water. When 3.6 l of water was poured into the tank, the height of the water

level was 8 cm. How much water was there in the tank at first?

(1) 1200 cm³ (2) 3600 cm³

(3) 4800 cm³ (4) 8400 cm³ ( )


9.

of triangle P and

of triangle Q is shaded. What is the ratio of the shaded

area to the area of the whole figure?

P Q

(1) 1 : 12 (2) 1 : 13

(3) 2 : 11 (4) 2 : 13 ( )

10. In a school, 25% of the pupils are Malays, 5% of them are Indians and the rest

are Chinese. 40% of the Chinese pupils are boys. What percentage of the

pupils are Chinese girls?

(1) 12% (2) 42%

(3) 28% (4) 60% ( )

Section B: 10 Questions, 15 marks

Questions 11 to 15 carry 1 mark each. Questions 16 to 20 carry 2 marks each.

Show your mathematical statements clearly in the space provided and write

your answers in the blank provided. No calculator is allowed in this section.

11. What is the sum of the first 3 multiples of 9?

Ans: ____________________________


12. A clock reads 9.30 on a particular Sunday morning, but the starts to run

too fast, gaining 4 minutes each hour. What is the actual time when the

clock displays 11.38 a.m.?

Ans: _______________________ a.m.

13. Abel, Benjamin and Casey shared $49 among themselves. Benjamin

received twice as much as Abel, Casey received twice as much

money as Benjamin. How much money did Abel receive?

Ans: $ __________________________

14. Find the value of 5m – 9n² + 5s when m = 8, n = 2 and s = 16.

Ans: ____________________________


15. The volume of a cuboid is 2450 cm³. Its base is a square of 5 cm. Find its

height.

Ans: ________________________ cm

16. ABCD is a square of side 10 cm. WXYB is also a square. Find the area of

the shaded triangle.

A W B

10 cm X Y

D C

Ans: ________________________ cm²

17. Mindy spent 30% of her pocket money on a story book and 40% of the

remainder on a magazine. What percentage of her money is left?

Ans: __________________________ %


18. Study the number pattern below.

Pattern 1 Pattern 2 Pattern 3 Pattern 4 Pattern 5 …

…

What will be the fraction in Pattern 8?

Ans: ____________________________

19. During a promotion, a bicycle with a selling price of $150 was given a

2n% discount. If Timothy bought it at the discounted price, how much

did he save? Express your answer in terms of n in its simplest form.

Ans: $ __________________________

20. 3 basketballs and 4 rugby balls cost $507. 6 basketballs and 3 rugby

balls cost $624. What is the cost of 1 rugby ball?

Ans: $ __________________________


Section C: 6 Questions, 20 marks

For Questions 21 to 26, show your steps in the space provided for each

question and write your answers in the spaces provided. The marks for each

question is shown in the [ ] at the end of the question.

Calculators can be used in this section.

21. Flags are planted at equal intervals of 25 m along the perimeter of a square

field. The perimeter of the field is 400 m. How many flags are there?

Ans: ____________________________ [2]

22. Albert and Stanley had a total of 540 marbles. After Albert gave away 240 of

his marbles, he had thrice as many marbles as Stanley. How many more

marbles had Albert than Stanley at first?

Ans: ____________________________ [2]


23. When Mrs Yeo carries her baby, the total mass of her and the baby is 53 kg.

When Mrs Cheong carries the same baby, their total mass is 83 kg. Mrs Yeo’s

mass is

that of Mrs Cheong’s mass. Find the mass of the baby.

Ans: ____________________________ [3]

24. The table below shows the prices for printing a photograph in a printing shop.

Number of photographs Price

First 10 pieces $2.60 per piece

Every additional piece $1.70 per piece

(a) Linda printed 30 photographs. How much did she pay?

(b) Jiaming paid $43 to print his photographs. How many photographs did

he print?

Ans: (a) _________________________ [2]

(b) _________________________ [2]


25. There were 225 apples and 253 oranges in Box P. There were 260 apples and

212 oranges in Box Q. Mr Poh moved some apples and oranges from Box Q to

Box P. In the end, 40% of the fruits in Box P and 70% of the fruits in Box Q were

apples. How many fruits did Mr Poh move from Box Q to Box P?

Ans: ____________________________ [4]

26. Harold collects game cards. Every day, he gets 10 additional new game

cards. On every 3rd day, he gives 3 cards to his friend, Mike. If Harold starts

with 8 cards on the 1st day, on which day will he have exactly 180 cards?

Ans: ____________________________ [5]

primary 6 february review 4 50 - talkingmaths · 2013. 2. 7. · 1 p6/feb/review4 primary 6...

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