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Primary 6 Maths: Speed — Practice Paper 4 (10 Questions)
Primary 6 Maths: Speed — Practice Paper 4 (10 Questions)
Paper 4 concentrates on conversion and average speed: the three basic formulas first, then m/s against km/h, an arrival time, a two-leg average, laps and a tunnel, and finally the km/h-read-as-m/s slip.
Quick answer Ten questions, about 25 minutes. Items 01 to 03 use the basic speed formulas; items 04 to 06 convert units and find an arrival time; items 07 to 09 cover a two-leg average, laps and a tunnel; item 10 redoes the km/h and m/s mix-up.
01 Paper details (check answers afterwards)
| Item | Detail |
|---|---|
| Questions | 10 questions |
| Suggested time | 25 minutes |
| Difficulty mix | Foundation 3 · Intermediate 3 · Challenge 3 · Error redo 1 |
| Chapter | Chapter: Primary 6 Maths: Speed — Tutor Lesson Plan |
| Level | Primary 6 |
02 Questions (10 items)
- FoundationA car travels 180 km in 3 hours. What is its average speed in km/h?
- FoundationA train runs at 65 km/h for 4 hours. How far does it travel?
- FoundationA runner covers 900 m in 60 seconds. What is his speed in m/s?
- IntermediateChange 18 m/s into km/h.
- IntermediateChange 54 km/h into m/s.
- IntermediateTwo towns are 480 km apart and the car runs at 80 km/h. It leaves at 08:30. When does it arrive?
- ChallengeThe outward trip of 150 km takes 2 hours and the return trip of 150 km takes 3 hours. What is the average speed for the whole journey?
- ChallengeA running track is 400 m round. How long does 5 laps take at 4 m/s, in seconds and in minutes?
- ChallengeA 100 m long train passes through a 300 m tunnel at 20 m/s. How long from the front entering to the back leaving?
- Error redoA car runs at 72 km/h. A student wrote “that is 72 m/s”. What is the correct value in m/s?
03 Answers and one-line notes
| # | Answer | One-line note |
|---|---|---|
| 1 | 60 km/h | Speed = distance ÷ time = 180 ÷ 3 = 60 km/h. |
| 2 | 260 km | Distance = speed × time = 65 × 4 = 260 km. |
| 3 | 15 m/s | Speed = 900 ÷ 60 = 15 m/s; seconds and metres must match. |
| 4 | 64.8 km/h | 18 m each second is 18 × 3 600 = 64 800 m an hour, which is 64.8 km. |
| 5 | 15 m/s | 54 000 m in 3 600 s gives 15 m/s; dividing by 3.6 gives the same answer. |
| 6 | It takes 6 hours and arrives at 14:30 | Time = 480 ÷ 80 = 6 hours, and 08:30 plus 6 hours is 14:30. |
| 7 | 60 km/h | Total 300 km in 5 hours gives 60 km/h; averaging 75 and 50 would be wrong. |
| 8 | 2 000 m, which takes 500 seconds, or 8 minutes 20 seconds | 5 × 400 = 2 000 m; 2 000 ÷ 4 = 500 s, which is 8 minutes 20 seconds. |
| 9 | 20 seconds | The train must cover 100 + 300 = 400 m, and 400 ÷ 20 = 20 seconds. |
| 10 | 20 m/s; the kilometres and hours were never converted | 72 km/h = 72 000 m ÷ 3 600 s = 20 m/s; a km/h figure is always 3.6 times the m/s figure. |
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.
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.
