Primary 4 Mathematics Data Analysis Quiz

Primary 4 Mathematics Quiz - Data Analysis (Answer Key)

Total Marks: 30

Section A: Tables

1. How many books did Ali borrow on Thursday?

• Answer: 4
• Explanation: Look at the row for "Ali" and the column for "Thu". The value is 4.
• Marks: 1

2. Which student borrowed the most books on Wednesday?

• Answer: Chandra
• Explanation: Look at the "Wed" column. Ali: 1, Bala: 2, Chandra: 4, Devi: 3. The highest number is 4, which belongs to Chandra.
• Marks: 1

3. How many books did Devi borrow in total from Monday to Friday?

• Answer: 10
• Explanation: Add the values in Devi's row: $0 + 2 + 3 + 3 + 2 = 10$.
• Marks: 1

4. How many more scoops of Chocolate were sold than Strawberry?

• Answer: 20
• Explanation: Chocolate = 45, Strawberry = 25. Difference: $45 - 25 = 20$.
• Marks: 1

5. What is the total number of scoops sold for Vanilla and Mint combined?

• Answer: 45
• Explanation: Vanilla = 30, Mint = 15. Total: $30 + 15 = 45$.
• Marks: 1

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Section B: Bar Graphs

6. How many visitors were there in January?

• Answer: 400
• Explanation: Look at the bar for "Jan". The top of the bar aligns with the 400 mark on the vertical axis.
• Marks: 1

7. In which month were there the most visitors?

• Answer: March
• Explanation: The tallest bar represents the most visitors. The bar for "Mar" is the tallest, reaching 800.
• Marks: 1

8. How many more visitors were there in March than in January?

• Answer: 400
• Explanation: March visitors = 800. January visitors = 400. Difference: $800 - 400 = 400$.
• Marks: 1

9. True or False: The number of visitors in April was less than in February.

• Answer: True
• Explanation: April visitors = 500. February visitors = 600. Since $500 < 600$, the statement is true.
• Marks: 1

10. Which two teams scored a total of 50 points?

• Answer: Red and Green
• Explanation: Red scored 30. Green scored 20. $30 + 20 = 50$. (Blue is 45, Yellow is 35; no other pair adds to 50).
• Marks: 2 (1 for each correct team name)

11. How many points did the Blue team score more than the Green team?

• Answer: 25
• Explanation: Blue scored 45. Green scored 20. Difference: $45 - 20 = 25$.
• Marks: 2

12. If the winning team receives a prize of $10 for every 5 points scored, how much money does the winning team receive?

• Answer: $90
• Explanation:
  1. Identify the winning team: Blue scored the highest (45 points).
  2. Calculate how many sets of 5 points are in 45: $45 \div 5 = 9$ sets.
  3. Calculate prize money: 9 \times \10 = $90$.
• Marks: 2 (1 for identifying correct points/team, 1 for final calculation)

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Section C: Line Graphs

13. What was the temperature of the tea at the start (0 minutes)?

• Answer: 90
• Explanation: At Time = 0, the point on the graph aligns with 90 on the Temperature axis.
• Marks: 1

14. What was the temperature of the tea after 6 minutes?

• Answer: 45
• Explanation: At Time = 6, the point on the graph aligns with 45 on the Temperature axis (halfway between 40 and 50).
• Marks: 1

15. During which 2-minute interval did the temperature drop the most?

• Answer: A) 0 to 2 min
• Explanation:
  • 0 to 2 min: $90 - 70 = 20$°C drop.
  • 2 to 4 min: $70 - 55 = 15$°C drop.
  • 4 to 6 min: $55 - 45 = 10$°C drop.
  • 6 to 8 min: $45 - 35 = 10$°C drop.
  • The largest drop is 20°C.
• Marks: 1

16. At what time was the number of customers the highest?

• Answer: 11 a.m.
• Explanation: The highest point on the line graph is at 11 a.m., corresponding to 50 customers.
• Marks: 2

17. How many more customers were there at 11 a.m. than at 9 a.m.?

• Answer: 40
• Explanation:
  • Customers at 11 a.m. = 50.
  • Customers at 9 a.m. = 10.
  • Difference: $50 - 10 = 40$.
• Marks: 2

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Section D: Problem Solving with Data

18. Siti collected 30 fewer stickers than Mary. How many stickers did they collect altogether?

• Answer: 390
• Explanation:
  1. Find Siti's stickers: Mary has 150. Siti has $150 - 30 = 120$.
  2. Find total: John (120) + Mary (150) + Siti (120).
  3. $120 + 150 + 120 = 390$.
• Marks: 2 (1 for finding Siti's amount, 1 for correct total)

19. If each tree costs $5 to plant, how much did Class 4B and Class 4D spend together?

• Answer: $225
• Explanation:
  1. Find total trees for 4B and 4D: $20 + 25 = 45$ trees.
  2. Calculate cost: 45 \times \5$.
  3. $45 \times 5 = 225$.
• Marks: 2 (1 for correct tree count, 1 for correct cost)

20. Tom wants to run a total of 20 km over 6 days. How far must he run on Day 6 to reach his goal?

• Answer: 4 km
• Explanation:
  1. Calculate total distance run in first 5 days: $2 + 3 + 2 + 4 + 5 = 16$ km.
  2. Subtract from goal: $20 - 16 = 4$ km.
• Marks: 2 (1 for sum of first 5 days, 1 for final subtraction)