Primary 4 Mathematics · Chapter 11 · Answers and explanations
Lesson 11.1: Recall: Tables, Bar Graphs and Line Graphs (answers)
Section A · Multiple choice 4 marks
1. How many pupils chose Badminton in all?1 mark
(A) 6(B) 34(C) 20(D) 54
Answer: (B) 34Badminton: 20 girls and 14 boys. 20 + 14 = 34. (6 is how many more girls than boys.)
2. Which sport is the most popular among the boys?1 mark
(A) Soccer(B) Badminton(C) Swimming(D) All are equal
Answer: (A) SoccerLook down the Boys column: 25, 14, 16. The biggest number is 25, so Soccer.
3. How many more plums than pears were sold?1 mark
(A) 65(B) 15(C) 25(D) 35
Answer: (C) 25Plums: 45. Pears: 20. How many more means subtract: 45 − 20 = 25.
4. In which month did the savings go down compared with the month before?1 mark
(A) February(B) March(C) April(D) May
Answer: (B) MarchThe line goes down only from February ($20) to March ($14), so the answer is March.
Section B · Write your answer 11 marks
5. How many girls are there in all?1 mark
Answer: 5012 + 20 + 18 = 50 girls.
6. How many boys are there in all?1 mark
Answer: 5525 + 14 + 16 = 55 boys.
7. How many more girls than boys chose Badminton?1 mark
Answer: 620 − 14 = 6 more girls.
8. How many fruits were sold in all?1 mark
Answer: 13035 + 20 + 45 + 30 = 130 fruits.
9. How many fewer peaches than plums were sold?1 mark
Answer: 1545 − 30 = 15 fewer peaches.
10. How much did Joe save in the 5 months in all?2 marks
Answer: $11012 + 20 + 14 + 28 + 36 = 110. Joe saved $110.
11. Between which two months was the greatest increase in Joe's savings?2 marks
Answer: March and AprilIncreases: Jan to Feb 8, Mar to Apr 14, Apr to May 8. The greatest is $14, from March to April.
12. How much more did Joe save in May than in February?2 marks
Answer: $16May: $36. February: $20. 36 − 20 = 16. Joe saved $16 more.
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