中文（繁體）
中文（简体）
English
P4 Maths: Bar Charts and Scales (Paper 1: basics)
Tutor Prep Guide · reading bar charts and pictograms: value of each grid, comparison, totals and difference, and why the vertical axis starts at zero
P4 Maths: Bar Charts and Scales (Paper 1: basics)
The first paper builds the base: make grids times value per grid automatic.
Direct answers Ask two things before reading: what one grid stands for, and how many grids the bar covers. Multiply them.
01 Paper details (check answers afterwards)
| Item | Detail |
|---|---|
| Questions | 10 |
| Suggested time | 20 |
| Difficulty mix | Foundation 3 · Intermediate 3 · Challenge 3 · Error redo 1 |
| Chapter | Chapter: P4 Maths: Bar Charts and Scales |
| Level | reading bar charts and pictograms: value of each grid, comparison, totals and difference, and why the vertical axis starts at zero |
02 Questions (10 items)
- FoundationIf each grid stands for 4 apples and the bar for apples is 5 grids tall, how many apples are there?
- FoundationIn the same chart bananas take 3 grids, oranges 6 grids and pears 2 grids. Which fruit is the most?
- FoundationThe bar for pears is 2 grids tall and each grid stands for 4. How many pears are there?
- IntermediateHow many fruits are there in the four kinds altogether?
- IntermediateOranges are the most at 24 and pears the fewest at 8. What is the difference?
- IntermediateThere are 24 oranges and 8 pears. How many times as many oranges as pears?
- ChallengeIn a pictogram each symbol stands for 4 people and 3 whole symbols are drawn. How many people is that?
- ChallengeWhy must the vertical axis of a bar chart start at zero?
- ChallengeWhat goes on the horizontal axis and what goes on the vertical axis of a bar chart?
- Error redoA student sees the apple bar is 5 grids tall and answers 5 apples. What is the correct answer?
03 Answers and one-line notes
| # | Answer | One-line note |
|---|---|---|
| 1 | 20 apples | 5 grids times 4 apples per grid gives 20 apples. |
| 2 | Oranges (24) | Comparing the grids, 6 is the tallest, so oranges are the most. |
| 3 | 8 pears | 2 times 4 gives 8 pears. |
| 4 | 64 | 20 plus 12 plus 24 plus 8 makes 64. |
| 5 | 16 | 24 minus 8 leaves 16. |
| 6 | 3 times | 24 divided by 8 is 3, so 3 times. |
| 7 | 12 people | Number of symbols times value per symbol: 3 times 4 is 12. |
| 8 | Otherwise the bar lengths are out of proportion and gaps look bigger than they are | Comparing bar lengths needs the same starting point; any other start exaggerates the gap. |
| 9 | Categories on the horizontal axis, amounts on the vertical axis | The horizontal axis holds the items compared and the vertical axis holds the amounts. |
| 10 | 20 apples | Grids are not amounts; multiply by 4 per grid: 5 times 4 is 20. |
04 What to do after marking
- After marking, redo only the wrong items and write down which step went wrong (formula, unit, or misread number).
- Repeat the same item two days later; move to the next paper only when both attempts are correct.
- Parents only need the answer and note columns; there is no need to explain every item.
After paper one, take paper two and make grids times value per grid automatic.Tutor Registration →
Questions and answers are written originally by the TutorZone team and are not taken from any school, publisher or examination authority paper. Every value is checked by computer.