PL RU P6L21 Revision [1] WS- 2022 (1)

Primary 6

Rev Up! Math

Name Revision [1] (Lesson 21)
Tutor Revision [1] (Lesson 21)
Topic

Primary 6: Rev Up! Math

Exercise 1: For each question, four options are given. One of them is the
correct answer. Make your choice (1, 2, 3 or 4) and write the
answer in the bracket provided.

1. ABC is an equilateral triangle. BD is a straight line. Find ∠y .

A

B 14º D
yº
(1) 14º
(2) 16º C
(3) 30º
(4) 44º ()

2. Andy, Ben and Carol shared some candies in the ratio of 3 : 4 : 5 respectively
If Ben had 24 candies, how many candies did Andy and Carol have in total ?

(1) 48 ()
(2) 72
(3) 168

(4) 192

3. Devi bought a guitar at $210. She had to pay an additional 7% GST.
How much was the GST ?

(1) $ 1.47 ( )
(2) $ 7.00
(3) $ 14.70

(4) $ 30.00

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Primary 6: Rev Up! Math

4. Angela is z years old. Her father is 4 times as old as she is. Find her father’s age
in 6 years’ time.

(1) 4z – 6 ( )

(2) 4z + 6
(3) 6 – 4z
(4) 6 x 4z

5. What is the missing value in the box?

6 ÷ 3 = 7
7

(1) 2 ()
(2) 3
(3) 4
(4) 5

2
6. Mary had a box of blue and red marbles. 5 of her marbles were blue. Her brother

took away half of her blue marbles from the box. Find the percentage of the

red marbles in the end.

(1) 20% ( )
(2) 25%
(3) 50%
(4) 75%

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7. 4 of the tourists in the souvenir shop are men . 5 of the women are queueing at

the cashier counter to make payment. There were 120 tourists at the souvenir shop.

How many women are still shopping for souvenirs?

(1) 27 ()
(2) 36
(3) 54 2
(4) 72

Primary 6: Rev Up! Math

8. The total mass of 3 oranges is 300 g and the total mass of 5 pears is 700 g. What is the
average mass of the fruits?

(1) 120 g ()
(2) 125 g
(3) 200 g
(4) 240 g

9. A cuboid of height 20 cm has a square base of side 5 cm. Find its volume. ( )

(1) 100 cm3
(2) 400 cm3
(3) 500 cm3
(4) 2 000 cm3

10. Mrs Tan baked 16 cakes last week. She baked another 4 cakes this week.
Find the percentage increase in the number of cakes she baked.

(1) 20% ( )
(2) 25%
(3) 75%
(4) 125%

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Primary 6: Rev Up! Math

Exercise 2: 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.
11. 3 of Sally’s stickers is equal to 2 of David’s stickers.

45
If Sally has 64 stickers, how many stickers does David have?

Ans :
12. Ronald had some stickers. He gave 40% of them to Gary and 1 of

3
the remainder to Henry. He had 50 stickers left.
How many stickers did Ronald have at first ?

4Ans :

Primary 6: Rev Up! Math

13. A cupcake cost q cents. A pie cost 3 times as much as a cupcake.
Tina bought 8 cupcakes and 4 pies.
How much did she spend altogether ?
Express your answer in terms of q .

Ans : cents

14. 30 pupils shared a box of chocolates. 8 of them gave all their cookies to
the rest of the pupils. As a result, the rest of the pupils received 4 more
cookies each. How many cookies were there in the box at first ?

Ans :

5

Primary 6: Rev Up! Math

15. A camera costs $270 after a 10% discount. What is the original price of the
camera?

Ans : $
16. JKLM is a rhombus. JLPN is a rectangle. Find ∠ x.

K

x L
J

24º

48º

M
NP

Ans : º

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Primary 6: Rev Up! Math

17. The ratio of the amount of money Kate had to the amount of money Jenny had was
2 : 5. After Jenny received $75 from her father, the ratio became 4 : 15. How much
money did Kate have at first?

Ans : $
18. Mr. Chan spent 25% of his salary on a laptop and half of the rest of his salary on

his car loan. He had $825 left. What is Mr. Chan’s salary?

Ans : $

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Primary 6: Rev Up! Math

*19. Jerry earns $0.60 for every canned drink he sells. He earns an extra bonus of $5
for every 20 cans he sells. How many cans does he sell if he earns $51?

Ans :

20. John went for a 3-day hiking trip. Each day he walked 1.6 km more than the day
before. He walked a total of 46.8 km for the three days. How many kilometres did he
walk on the first day?

Ans : km

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Primary 6: Rev Up! Math

Extension

Exercise 3: 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.
You can use calculator for this exercise.

*1. John wanted to buy a TV set. At first, it was sold at $1200.
However, the TV set was sold at a 25% discount during a sale.
How much did John pay for the TV set if he had bought it during the sale
and had to pay 7% GST after the discount?

Ans : [3]

*2. The ratio of the number of Bob's books to the number of Tim's books is 4 : 7.
Altogether, they have 77 books. After Tim gave away 5 books to Bob, what is
the new ratio of the number of Bob's books to the number of Tim's books?

Leave your answer in its simplest form.

Ans : [3]

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