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Published by admin, 2022-07-07 03:20:24

PL BM P5L7 Fun with Math WS

PL BM P5L7 Fun with Math WS

Primary 5

Boost! Math

Name

Tutor Fun with Math (Lesson 7)
Topic Fun with Math (Lesson 7)

Primary 5: Boost! Math

Exercise 1: Solve the following questions.
1. (a) Y is a whole number. 8 is subtracted from Y. Then it is multiplied by 1 a3nd the

result is 36. What is this number?

Answer:

(b) X is a whole number. Add 17 to X. Then multiply it by 34and the result is 72.
W hat is X?

Answer:
2. Jamie bought some gerberas for her friends. If she gave 6 gerberas to each of

them, she would have 18 gerberas left. If each of her friends received 9 gerberas,
she would be short of 15 gerberas.
(a) How many friends were there?
(b) How many gerberas did Jamie buy?

Answer: (a)
(b)

1

Primary 5: Boost! Math

3. Mrs Rin is thrice as old as her son, Peter. Peter will be 15 years old in 3 years
time. How old will Mrs Rin be when Peter is 12of his mother’s age?

Answer:
4. What is the sum of 1 + 2 + 3 + ……. + 297 + 298 + 299?

Answer:

2

Primary 5: Boost! Math

5. Oksana Chusovitina has competed in the artistic gymnastics at the Olympics for
8 times. The Olympics is held every 4 years. Her 6th appearance at the Olympics
was in 2012.
(a) In which year did she compete in the Olympics for the 1st time?
(b) The first (modern) Olympic Games was held inAthens, Greece in 1896.
No games took place in 1916, 1940 and 1944 due to World Wars I and II.
How many Olympic Games were held from 1896 to 2012?

Answer:

6. Study the number sequence below.

7, 5, 6, 1, 5, 7, 7, 5, 6, 1, 5, 7, 7, 5, ……

(a) Which number is in the 73rd position?
(b) What is the sum of the first 50 numbers?

Answer: (a) 3
(b)

Primary 5: Boost! Math

7. Alan, Ben, Cathy, Dan, and Edith sat around a 5-sided table.
Ben sat on Cathy’s right.
Alan sat on Dan’s left.
Edith is not seated next to Dan.
If Ben sat at Seat 1, where did the others sit?

34

25
1

Answer: Seat 2:
Seat 3:
Seat 4:
Seat 5:

8. There are 10 players in a badminton competition. Every player must play a match
against the rest of the players. How many matches are there in the entire
competition?

Answer: 4

Primary 5: Boost! Math

9. The bunting shown below is made up of small and big triangular flags. 2 small flags
are placed between every 4 big flags. If there is total of 143 big and small triangular
flags, how many small triangular flags are there?

Answer:

10. Among the 3 sisters Fiona,Alice and Mandy, one is a policewoman, the other two are
a video game developer and a doctor.
Based on the statements below, find the occupation of each of the sisters.
(Hint: Draw a table)

The policewoman is younger than Mandy.
Alice is not the same age as the video game developer.

Fiona is older than the video game developer.

Ans: Alice:
Fiona:

Mandy:

5

Primary 5: Boost! Math

11. You have 10 square buttons. How do you sew the 10 buttons such that there is an
equal number of buttons on each side of the cushion?

Draw to represent the buttons on the cushion.

12. Ned had some savings. He wanted to buy a scooter bike that cost $295 but he did
not have enough money. He decided to save some money every day for the next 10
days. He saved $4 on the 1st day and increased his savings by $4 every
subsequent day. At the end of 10 days, he had saved enough money to buy the
scooter bike. How much money did Ned have at first?

Answer:

6

13. Which picture cube does this shape make? Primary 5: Boost! Math

A B

CD

Answer:

7


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