Q1
Open-ended
1 mark
Convert 30 ℓ 5 mℓ to ℓ.
P5 Mathematics SA1 2021 — Raffles Girls
Source: Raffles Girls, 2021
This P5 Mathematics SA1 paper from Raffles Girls (2021) contains 14 questions worth 30 marks. Use it as a study reference for Mathematics topics typically tested at P5 level in Singapore schools.
Q2
Open-ended
1 mark
Round 40.854 to 1 decimal place.
Q3
Open-ended
1 mark
Write 6 tens, 4 tenths and 7 thousandths as a numeral.
Q4
Open-ended
2 marks
A total of 245 people visited an exhibition held in January. 98 of them were adults. What percentage of the people who visited the exhibition were adults?
Q5
Open-ended
2 marks
Arrange the following decimals from the largest to the smallest.
3.809, 3.09, 3.87
Q6
Open-ended
2 marks
Siti paid $20 for 400 g of durian. How much did Siti have to pay for 900 g of durian?
Q7
Open-ended
2 marks
Jane had an equal volume of blue and red paint. After using 3.5 ℓ of the blue paint and 13.3 ℓ of the red paint, the amount of blue paint left was 5 times the amount of red paint left. What was the amount of red paint left?
Q8
Open-ended
2 marks
🖼 Visual
The figure is made up of identical triangles. How many more triangles must be shaded such that 75% of the figure is shaded?
Q9
Open-ended
2 marks
There were 350 participants at a coding workshop. 30% of them were girls and the remaining were boys. How many boys were at the workshop?
Q10
Open-ended
2 marks
Mr Smith had $95 000 in his bank account. The bank paid 3% interest at the end of each year. He did not withdraw any money from his account. How much money did he have in his bank account at the end of one year?
Q11
Open-ended
2 marks
🖼 Visual
Xavier bought 1.75 m of wire. He cut part of the wire to bend into 3 squares of different sizes as shown in the figure. PQ is a straight line of length 18 cm.
What was the length of the remaining wire?
Q12
Structured
3 marks
🖼 Visual
Mrs Richard and Mrs Raj saw an advertisement for a hula dancing class.
Advertisement: Feel like a star dancer! • $120 per session • Get 20% discount when you sign up for 2 sessions.
(a) Mrs Richard decided to sign up for 2 sessions of hula dancing. How much would she need to pay after the discount?
(b) Mrs Raj decided to sign up for 1 session of hula dancing. How much would she need to pay after including a GST of 7%?
Q13
Structured
4 marks
40% of the people at a party were men and the rest were women. 36 men wore hats and 25% of the men did not wear hats. There were a total of 30 people at the party who did not wear hats.
(a) How many men did not wear hats at the party?
(b) What percentage of the people were women not wearing hats?
Q14
Open-ended
4 marks
A bakery shop baked 10.05 kg of cookies. Some of the cookies were packed into small packets of 250 g each and the rest were packed into big packets of 600 g each. In the end, the number of big packets was 4 more than the number of small packets. How many big packets of cookies were packed?