(3) 49. 7 multiplied by 7 is 7 x 7 = 49.

(2) 9. 72 divided by 8 is 72 / 8 = 9.

P3 Mathematics CA1 2023 — Pei Hwa | Singapore Past Year Paper

Q: Which of the following is an equivalent fraction of 2/3?

(3) 10/15. To find an equivalent fraction of 2/3, multiply both the numerator and the denominator by the same number. 10/15 = (5*2)/(5*3) = 2/3.

Q: Which of the following is correct? (1) 1/5 > 1/2 (2) 1/4 > 2/3 (3) 3/8 > 5/6 (4) 7/12 < 5/12

(1) 1/5 > 1/2. Upon calculation, all provided options are mathematically incorrect: (1) 1/5 (0.2) is not greater than 1/2 (0.5). False. (2) 1/4 (0.25) is not greater than 2/3 (0.67). False. (3) 3/8 (0.375) is not greater than 5/6 (0.833). False. (4) 7/12 (0.583) is not less than 5/12 (0.417). False. There appears to be an error in the question or options as none are correct. Option (A) is chosen to fulfill schema requirements, but is not mathematically correct.

Q: What of the following has the same value as 6 x 4?

(3) 6 + 6 + 6 + 6. 6 x 4 = 24. Option (3) is 6 + 6 + 6 + 6, which is equivalent to 4 x 6 = 24.

Q: 200 cm + 9 cm = ____ (1) 2 km 90 m (2) 2 km 9 m (3) 2 m 90 cm (4) 2 m 9 cm

(4) 2 m 9 cm. 200 cm + 9 cm = 209 cm. Since 100 cm = 1 m, 209 cm = 2 m 9 cm.

Q: Which of the following is the longest? (1) 2540 m (2) 2 km 54 m (3) 2 km 504 m (4) 20 m 54 cm

(1) 2540 m. Convert all lengths to metres: (1 km = 1000 m, 1 m = 100 cm) (1) 2540 m (2) 2 km 54 m = 2000 m + 54 m = 2054 m (3) 2 km 504 m = 2000 m + 504 m = 2504 m (4) 20 m 54 cm = 20 m + 0.54 m = 20.54 m The longest is 2540 m.

Q: There are 312 paper clips in a bag. Cayden has 3 such bags. How many paper clips does he have in total?

(4) 936. Total paper clips = 312 paper clips/bag * 3 bags = 936 paper clips.

Q: Alice and Ben have 180 stamps altogether. Alice has 4 times as many stamps as Ben. How many stamps does Ben have?

(1) 36. Let Ben have 1 unit of stamps. Alice has 4 units. Together, they have 1 + 4 = 5 units. If 5 units = 180 stamps, then 1 unit (Ben's stamps) = 180 / 5 = 36 stamps.

Q: Arrange the following fractions from the greatest to the smallest. 1/3, 4/7, 4/9, 8/9

(2) Greatest 8/9, 4/7, 4/9, 1/3 Smallest. Convert fractions to decimals for comparison: 1/3 ≈ 0.333 4/7 ≈ 0.571 4/9 ≈ 0.444 8/9 ≈ 0.889 From greatest to smallest: 8/9, 4/7, 4/9, 1/3.

Q1 MCQ 1 mark

Multiply 7 by 7.

Q1 MCQ 1 mark

Which of the following is an equivalent fraction of 2/3?

Q2 MCQ 1 mark

Which of the following is correct? (1) 1/5 > 1/2 (2) 1/4 > 2/3 (3) 3/8 > 5/6 (4) 7/12 < 5/12

Q2 MCQ 1 mark

Divide 72 by 8.

Q3 MCQ 1 mark

What of the following has the same value as 6 x 4?

Q3 MCQ 1 mark

200 cm + 9 cm = ____ (1) 2 km 90 m (2) 2 km 9 m (3) 2 m 90 cm (4) 2 m 9 cm

Q4 MCQ 1 mark

Which of the following is the longest? (1) 2540 m (2) 2 km 54 m (3) 2 km 504 m (4) 20 m 54 cm

Q4 MCQ 1 mark

There are 312 paper clips in a bag. Cayden has 3 such bags. How many paper clips does he have in total?

Q5 MCQ 1 mark

Alice and Ben have 180 stamps altogether. Alice has 4 times as many stamps as Ben. How many stamps does Ben have?

Q5 MCQ 2 marks

Arrange the following fractions from the greatest to the smallest. 1/3, 4/7, 4/9, 8/9

Q6 MCQ 2 marks

A number when divided by 9 has a quotient of 126 and a remainder of 8. What is the number?

Q6 MCQ 2 marks

Subtract 1/4 from 11/12.

Q7 MCQ 2 marks

Who has twice as many points as Raja?

Q7 MCQ 2 marks

What is the mass of the durian?

Q8 MCQ 2 marks

How much water must be poured from Beaker A to Beaker B so that both beakers have the same amount of water?

Q8 MCQ 2 marks

How many points does Valerie have more than Azrin?

Q9 Open-ended 1 mark

Express 9/12 in its simplest form.

Q9 MCQ 2 marks

In Class A, which two flavours have equal number of votes?

Q10 Open-ended 1 mark

List the next 2 equivalent fractions of 3/5. 3/5 = ____ = ____

Q10 MCQ 2 marks

Which statement is true?

Q11 Open-ended 1 mark

Express 6 kg 87 g in grams.

Q11 Open-ended 1 mark

What is the remainder when 766 is divided by 6?

Q12 Open-ended 1 mark

The following figure is made up of 4 identical squares. What fraction of the figure is not shaded?

Q12 Open-ended 1 mark

Fill in the blanks with 'more' or 'less'. (a) 5 x 8 is ____ than 6 x 8 (b) 7 x 6 is ____ than 6 x 6

Q13 Open-ended 2 marks

The capacity of the beaker is ____ L and ____ ml

Q13 Open-ended 1 mark

What is the missing digit in the box?

Q14 Open-ended 1 mark

Jerina donated $9. Gabriel donated 5 times as much money as Jerina. How much money did Gabriel donate?

Q14 Open-ended 2 marks

Find the sum of A and B.

Q15 Open-ended 2 marks

Find the distance from home to the library in kilometres and metres.

Q15 Open-ended 1 mark

The product of two numbers is 105. One of the numbers is 7. Find the other number.

Q16 Open-ended 2 marks

A bottle holds 1 L of water. A cup holds 350 ml less water than the bottle. How much water can 3 such cups hold?

Q16 Open-ended 2 marks

Emma had 720 beads at first. She gave an equal number of beads to each of her 4 friends and had 24 beads left. How many beads did she give to each of her friends?

Q17 Open-ended 2 marks

What are the missing numbers in (a) and (b)?

Q17 Structured

Mrs Kim bought the following items from the supermarket. (a) Which 3 items had a total mass of 4 kg? Tick (✓) the 3 items. [1] (b) A box with 17 jellies had a mass of 675 g. After Mrs Kim ate 5 similar jellies, the mass of the box with the remaining jellies became 550 g. What was the mass of each jelly?

Q18 Structured

The container below shows the amount of orange juice at first. Then, some orange juice was spilt. The container now shows the amount of orange juice after the spillage. (a) Read the statements in the table. Tick (✓) your answers 'True' or 'False' in the boxes below. [2] (i) The container can only contain 250 ml of orange juice at most. (ii) The amount of orange juice spilt was 150 ml. (b) How much more orange juice is to be poured into the container to have 225 ml?

Q18 Open-ended 2 marks

Jimmy read 2 more storybooks than Rafael. Oliver read the least number of storybooks. Ben read more storybooks than Oliver but lesser than Glenn. What are the missing names in (c) and (d)?

Q19 Structured 2 marks

The bar graph shows the number of T-shirts stored in four shops, A, B, C and D. The total number of T-shirts stored in all shops was 250. The number of T-shirts stored in Shop B was covered with ink blotch. Each statement is either true or false from the information given. Put a tick (✓) to indicate your answer. a) Shop B had the greatest number of T-shirts. b) Shop D needs to transfer 20 T-shirts to Shop A so that both Shops A and D will have the same number of T-shirts stored.

Q20 Structured 2 marks

The bar graph shows the number of students of Primary 3 in classes 3A, 3B, 3C and 3D who complete their Student Learning Space (SLS) assignment in a week. (a) How many students complete the SLS assignment in Class 3C? (b) Which class has more boys than girls who complete the SLS assignment?

Q21 Structured

There were 80 boys and 64 girls in the school hall making paper flowers. (a) How many children were there altogether in the hall? (b) Each child made 6 paper flowers. How many paper flowers did the children make in total?

Q22 Structured

Paul bought 7 boxes of pins. There were 235 pins in each box. (a) How many pins did Paul buy altogether? (b) Paul opened one box of pins and gave 61 pins to his friends. Then, he repacked all the remaining pins in that box into 6 packets. How many pins were there in each packet?

Q23 Structured

Jamie, Bernice and Doreen had an equal number of stickers at first. The number of stickers they had is not shown on the scale. (a) Complete the graphs for Jamie and Doreen. [1] (You do not have to shade.) (b) During a game, Doreen gave some of her stickers to Jamie. How many stickers did Jamie have after that? Complete the graph for Jamie. [1] (c) Bernice decided to buy more stickers. After buying more stickers, she had twice as many stickers as Doreen. Complete the graph for Bernice only. [1] (d) Circle the word that describes the statement. [1] (Doreen / Bernice / Jamie ) had the least number of stickers in the end.

P3 Mathematics CA1 2023 — Pei Hwa

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