P3 Mathematics CA1 2023 — Nanyang

Q: The digit 5 of a number is in the hundreds place. Which one of the following is the number? (1) 1385 (2) 3851 (3) 5813 (4) 8531

D. 8531. In the number 8531: - The digit 1 is in the ones place. - The digit 3 is in the tens place. - The digit 5 is in the hundreds place. - The digit 8 is in the thousands place. Therefore, 8531 is the number where the digit 5 is in the hundreds place.

Q: Multiply 548 by 7. (1) 3536 (2) 3586 (3) 3786 (4) 3836

D. 3836. To multiply 548 by 7: 548 x 7 ----- 3836 (8 x 7 = 56, write 6, carry 5) (4 x 7 = 28, add carry 5 = 33, write 3, carry 3) (5 x 7 = 35, add carry 3 = 38, write 38) So, 548 × 7 = 3836.

Q: What is 1000 more than 5689? (1) 4689 (2) 5589 (3) 5789 (4) 6689

D. 6689. To find a number that is 1000 more than 5689, we add 1000 to 5689: 5689 + 1000 = 6689.

Q: Paul bought a toy robot and a deck of cards. The toy robot cost $29.30 and the deck of cards cost $16.75. How much did he pay altogether? (1) $35.05 (2) $36.05 (3) $45.05 (4) $46.05

D. $46.05. To find the total amount Paul paid, add the cost of the toy robot and the deck of cards: $29.30 (toy robot) + $16.75 (deck of cards) ---------- $46.05 (total)

Q: There were 4 cards as shown below. Janice picked 2 of the cards. The difference between the numbers on the 2 cards was 3000. Which 2 cards did she pick?

B. A and C. We need to find two cards whose numbers have a difference of 3000. Let's check the options: (1) Card A (8564) and Card B (3564): 8564 - 3564 = 5000 (Not 3000) (2) Card A (8564) and Card C (5564): 8564 - 5564 = 3000 (Correct) (3) Card B (3564) and Card D (5264): 5264 - 3564 = 1700 (Not 3000) (4) Card C (5564) and Card D (5264): 5564 - 5264 = 300 (Not 3000) Therefore, Janice picked Card A and Card C.

Q: Jane accidentally spilled some ink on a receipt. What was the greatest possible total amount on the receipt?

D. $20.95. 1. Calculate the sum of the known costs: Highlighter: $3.50 Book: $9.90 Sum of known items = $3.50 + $9.90 = $13.40 2. The receipt shows the total in the format '$ _ 20 . _ 5'. This means the total is $20.XY, where X is the obscured tens digit of the cents. 3. The 'Pencil Case' price is shown as '$ 6 . _ _'. To achieve the greatest possible total from the given options ($20.95), we must assume that the '6' for the Pencil Case cost could also be an obscured digit, allowing it to be greater than $6.00 if needed. 4. To find the greatest possible total, we select the largest option given: $20.95. 5. If the Total is $20.95, then the cost of the Pencil Case would be: Pencil Case cost = Total - Sum of known items Pencil Case cost = $20.95 - $13.40 = $7.55 6. Since $7.55 is a valid price for a pencil case (with a single digit for dollars and two digits for cents), $20.95 is the greatest possible total amount.

P3 Mathematics 2023 CA1 18 questions 40 marks

Source: Nanyang, 2023

This P3 Mathematics CA1 paper from Nanyang (2023) contains 18 questions worth 40 marks. Use it as a study reference for Mathematics topics typically tested at P3 level in Singapore schools.

Q1 MCQ 2 marks

The digit 5 of a number is in the hundreds place. Which one of the following is the number? (1) 1385 (2) 3851 (3) 5813 (4) 8531

Q1 MCQ 2 marks

Multiply 548 by 7. (1) 3536 (2) 3586 (3) 3786 (4) 3836

Q2 MCQ 2 marks

What is 1000 more than 5689? (1) 4689 (2) 5589 (3) 5789 (4) 6689

Q2 MCQ 2 marks

Paul bought a toy robot and a deck of cards. The toy robot cost $29.30 and the deck of cards cost $16.75. How much did he pay altogether? (1) $35.05 (2) $36.05 (3) $45.05 (4) $46.05

Q3 MCQ 2 marks 🖼 Visual

There were 4 cards as shown below. Janice picked 2 of the cards. The difference between the numbers on the 2 cards was 3000. Which 2 cards did she pick?

Q3 MCQ 2 marks 🖼 Visual

Jane accidentally spilled some ink on a receipt. What was the greatest possible total amount on the receipt?

Explanation 1. Calculate the sum of the known costs: Highlighter: $3.50 Book: $9.90 Sum of known items = $3.50 + $9.90 = $13.40 2. The receipt shows the total in the format '$ _ 20 . _ 5'. This means the total is $20.XY, where X is the obscured tens digit of the cents. 3. The 'Pencil Case' price is shown as '$ 6 . _ _'. To achieve the greatest possible total from the given options ($20.95), we must assume that the '6' for the Pencil Case cost could also be an obscured digit, allowing it to be greater than $6.00 if needed. 4. To find the greatest possible total, we select the largest option given: $20.95. 5. If the Total is $20.95, then the cost of the Pencil Case would be: Pencil Case cost = Total - Sum of known items Pencil Case cost = $20.95 - $13.40 = $7.55 6. Since $7.55 is a valid price for a pencil case (with a single digit for dollars and two digits for cents), $20.95 is the greatest possible total amount.

Q4 Structured 2 marks

Write the following in numerals. (a) Nine thousand, seven hundred and twelve (b) Four thousand, six hundred and four

Q4 Open-ended 2 marks

Find the quotient when 648 is divided by 4.

Q5 Open-ended 2 marks

I am a 4-digit even number formed with the digits 2, 4, 5 and 8. I am a number between 2600 and 2900. What number am I?

Q5 Open-ended 2 marks

Celine baked 492 cupcakes. She packed 5 cupcakes into each box. What is the smallest number of boxes needed for all the cupcakes to be packed?

Q6 Structured 2 marks

Fandi has 236 blue marbles. He has 9 times as many red marbles as blue marbles. He gives 100 red marbles to his best friend. How many red marbles does he have left?

Q6 Open-ended 2 marks

Look at the number pattern below. 4181, 4481, 4781, 5081, 5381 What is the missing number?

Q7 Open-ended 2 marks

Mrs Tan had 230 pencils. She gave each student 6 pencils and had 2 pencils left. How many students did Mrs Tan give the pencils to?

Q7 Structured 2 marks

Jane had 1352 marbles. Siti had 1515 marbles more than Jane. How many marbles did Jane and Siti have altogether?

Q8 Open-ended 2 marks 🖼 Visual

Jenny wants to buy lunch from a food court. She plans to buy a meal that includes 1 main dish, 1 soup and 1 drink. How many different ways can Jenny buy her lunch?

Q8 Open-ended 2 marks 🖼 Visual

Look at the number pattern below. Find the missing number.

Q9 Structured 4 marks

There were 3390 people at the Singapore Zoo on Friday. 1900 of them were adults. (a) How many children were there at the Singapore Zoo? (b) There were 685 fewer people at the Singapore Zoo on Friday than Saturday. How many people were there on Saturday?

Q9 Structured 4 marks

A jacket cost $59.90. A skirt cost $39.50 less than the jacket. (a) What was the cost of the skirt? (b) Siti bought the jacket and the skirt. How much did she pay for the two items?

P3 Mathematics CA1 2023 — Nanyang

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