PL BM P5L46 Sem 2 Review 2 Paper 1 WS

Primary 5

Boost! Math

Name Semester 2 Review 2 Paper 1 (Lesson 46)
Tutor Semester 2 Review 2 Paper 1 (Lesson 46)
Topic

Primary 5: Boost! Math

Semester 2 Review 2 Paper 1 45

Questions 1 to 10 carry 1 mark each. Questions 1 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. What is 259.551 when rounded to the nearest tenth? ()
(1) 259.500
(2) 259.55
(3) 259.6
(4) 260

2. Find the value of 80 + 8 ÷ 4 + 4 x 9 – (7 x 6) + 3. ()

(1) 1365
(2) 135
(3) 79
(4) 59

3. Arrange the following 4 numbers from the largest to the smallest.

(1) 29 , 7.05 , 71 , 700%
4 25

(2) 7.05 , 700% , 29 , 7215
4

(3) 700% , 7215 , 7.05 , 29
(4) 71 , 4
29 , 700% , ( )
25 4 7.05
)1
4. Express 5 km 20 m in km. (

(1) 0.520 km
(2) 5.20 km
(3) 5.02 km
(4) 5.002 km

5. Write 63 as a decimal Primary 5: Boost! Math
125
()
(1) 6.003

(2) 6.024

(3) 6.300

(4) 6.240

6. W hich of the following fractions is the smallest?

(1) 2
5

(2) 3
8

(3) 4
11
5
(4) 12 ()

7. The figure below shows 2 identical rectangles, X and Y.Given that the
unshaded area of X is 5 times the shaded area, what is the ratio of the shaded
area to the area of the figure?

X
Y

(1) 1 : 6 ()
(2) 1 : 9
(3) 1 : 10
(4) 1 : 11

2

Primary 5: Boost! Math

8. 1 ()
How many eighths are there in 54 ?

(1) 21
(2) 25
(3) 40
(4) 42

9. The average mass of 6 boxes is 150 g. The lightest box is 60 g. What is the
average mass of the other 5 boxes?

(1) 90 g ()
(2) 125 g
(3) 168 g
(4) 240 g

10. In the figure below, AC is parallel to DE. Find the area of the shaded part.
B

D 18 cm E 20 cm

6 cm

A 26 cm C

(1) 126 cm² ()
(2) 134 cm²
(3) 252 cm² 3
(4) 268 cm²

Primary 5: Boost! Math

11. The ratio of the number of Math books to the number of Science books was 5:4.
After adding another 15 Science books, there were 7 more Science books than
Math books. Find the total number of books after adding the Science books.

(1) 22 ()
(2) 63
(3) 72
(4) 87

12. Tom and John shared an amount of money in the ratio 4 : 9? After John spent
$120, they had an equal amount of money left. How much money did they have at
first?

(1) $ 240

(2) $ 312

(3) $ 600

(4) $ 1560 ()

13. The figure shows a cuboid with a square base and a height of 7 cm. The perimeter
of the square base is 36 cm. Find the volume of the cuboid.

7 cm

(1) 43 cm3 ()
(2) 252 cm3
(3) 343 cm3 4
(4) 567 cm3

Primary 5: Boost! Math

14. The mass of a box with 20 plates is 5600 g. The mass of a similar box with 5
plates is 1850 g. What is the mass of the box?

(1) 250 g ()
(2) 310 g
(3) 600 g
(4) 1250 g

15. The figure below is not drawn to scale. ∠ACB = 65°. Find ∠CAB.
B

A 65°
DC
(1) 25°
(2) 50° ()
(3) 65°
(4) 130°

5

Primary 5: Boost! Math

Questions 16 to 20 carry 1 mark each. Write your answers in the spaces provided,
For questions which require units, give your answer in the units stated.
16. Express 48 minutes as a percentage of 5 hours.

Ans:

17. W hat is the difference between 6.7 and 9.17?

Ans:
18. The length of cube X is 6 times the length of cube Y. Find the ratio of the volume

of cube X to cube Y.

Ans:

6

Primary 5: Boost! Math

19. 6 x 6 + 6 – 6 ÷ 6 x 6 + 6 = 6 x

Ans:

20. The figure below is not drawn to scale. ∠AOB and ∠COD are right angles.
∠y is twice of ∠z. Find ∠y.

AB

O C
y

120°

z

E
D

Ans: °

7

Primary 5: Boost! Math

Questions 21 to 30 carry 2 marks each. Write your answers in the spaces provided,
For questions which require units,, give your answer in the units stated.

21. 5 of the class were boys. 1 of the girls tied their hair. What fraction of the class
86

were girls who did not tie their hair?

Ans:

22. The mass of a bag was 2.431 kg when it was 3 filled with beads.
4

The mass of the bag is 625 g. 2 of the beads were removed from the bag.
3

W hat was the mass of the remaining beads? (Give your answer in grams.)

Ans: g

23. The average mass of a group of girls was 32 kg. After three boys with a total
mass of 117 kg joined the group, the average mass of all the children increased
to 34.1 kg. How many girls were there in the group?

8Ans:

Primary 5: Boost! Math

24. Ali is 6 years older than Hans. In 8 years’ time, their total age will be 64.
How old is Ali now?

Ans:

25. Mrs. Chan had 50 kg of flour. She packed all of the flour into 12 big packets and 8
small packets. The mass of each small packet was 300 g less than the mass of
each big packet. What was the mass of each big packet of flour?
(Give your answer in kg.)

Ans: kg

26. The figure below is made up of 2 squares of length 5 m and 8 m. Find the area of
the shaded triangle.
8m

5m

Ans: m2

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Primary 5: Boost! Math

27. May had 94 stamps and Lily had 136 stamps at first. After selling an equal
number of stamps, the number of stamps May had left to the number of stamps
Lily had left was 5 : 8. How many stamps did each of them sell?

Ans:
28. Jane spent an equal amount of money on 4 pancakes and 7 bars of ice cream.

Each bar of ice cream cost 60 cents less than each pancake.
How much did Jane spend?

Ans: $

10

Primary 5: Boost! Math

29. The usual price of a washing machine was $1250. During a sale, Mr. Ramli
bought the washing machine at a discount 30%. He also had to pay 7% GST.
What was the total amount of money Mr. Ramli paid for the washing machine?

Ans: $
30. Mrs. Tan bought 16 fewer oranges than apples and 12 more apples than pears.

There are 86 fruits in her trolley altogether. How many apples did she buy?

Ans:

11