Q1
Open-ended
1 mark
Express 2/125 as a decimal.
P5 Mathematics CA2 2021 — Tao Nan
Source: Tao Nan, 2021
This P5 Mathematics CA2 paper from Tao Nan (2021) contains 15 questions worth 28 marks. Use it as a study reference for Mathematics topics typically tested at P5 level in Singapore schools.
Q2
Open-ended
1 mark
Express 72 minutes in hours. Give your answer in the simplest form.
Q3
Open-ended
1 mark
🖼 Visual
Identify the base and height of the shaded triangle.
Q4
Open-ended
1 mark
May is 48 years old. The ratio of May's age to her grandmother's age is 12 : 25. Find their age difference.
Q5
Open-ended
1 mark
At a supermarket, pears were priced at $1.40 each or in bags of 3 for $3.60 per bag. What was the least amount of money needed to buy exactly 8 pears?
Q6
Open-ended
1 mark
🖼 Visual
How many unit cubes are used to build this solid?
Q7
Open-ended
1 mark
🖼 Visual
Draw the cuboid on the isometric grid.
Q8
Open-ended
1 mark
(1/4)A = (2/3)B. What is the ratio of A to B?
Q9
Open-ended
1 mark
🖼 Visual
The area of Triangle ABE is 20 cm². Its base, BE, is 1/2 of the base of Triangle ACD. Find the area of Triangle ACD.
Q10
Open-ended
1 mark
Sophie used 1/3 of a packet of chocolate chips to make cookies and 1/5 kg of the packet of chocolate chips to make a cake. She had 1/2 of the packet of chocolate chips left. Find the mass of the packet of chocolate chips at first.
Q11
Structured
3 marks
Ali and David had an equal number of stickers at first. After Ali used 16 stickers and David received another 47 stickers, the ratio of the number of stickers Ali had to the number of stickers David had became 1 : 4. How many stickers did Ali have at first?
Q12
Structured
2 marks
🖼 Visual
Study the diagram below and answer the following questions. (a) Draw the front view and the side view of the solid on the grids below. [2] (b) To build a big solid cube of 5 unit cubes per side, how many more unit cubes are needed?
Q13
Open-ended
3 marks
🖼 Visual
The shape below, not drawn to scale, is made up of some triangles and a square. Find the shaded area.
Q14
Structured
5 marks
Sheryl collected 4/5 as many seashells as Anne. After Sheryl gave 40 seashells to Anne, she had half as many seashells as Anne. (a) How many seashells did Sheryl have at first? (b) How many seashells did Anne have in the end? (c) What was the total number of seashells collected by the two girls?
Q15
Structured
5 marks
Hansel was supposed to buy 4 fruit tarts and 7 curry puffs which cost $11.10. Instead, he bought 7 fruit tarts and 4 curry puffs. Hansel paid $0.90 more. Find the cost of one fruit tart and the cost of one curry puff.