Measures and time · Ages 11–12

Comparing speeds worksheet

Part of: Speed

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Measures and time · Ages 11–12

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Name:Date:Score:／48

Write each answer in the space. For word problems, show your working and write a sentence answer.

1.Chi-keung skips 558 times in 6 minutes. How many skips is that a minute, on average?
Answer:
2.Tsz-ching skips 218 times in 2 minutes. How many skips is that a minute, on average?
Answer:
3.A walks 110 m in 2 minutes and B walks 300 m in 6 minutes. How many more metres per minute does the faster one walk?
Answer:

4.A, B and C start together. The picture shows where they are 10 seconds later. Who is the fastest?
- A. C
- B. All the same
- C. B
- D. A
Choose the right answer
Answer:
5.A and B each run 100 m. A takes 24 seconds and B takes 16 seconds. Who is faster?
- A. A
- B. Can't tell
- C. The same
- D. B
Choose the right answer
Answer:
6.A and B each run 100 m. A takes 22 seconds and B takes 19 seconds. Who is faster?
- A. The same
- B. Can't tell
- C. B
- D. A
Choose the right answer
Answer:
7.A walks 160 m in 2 minutes and B walks 240 m in 4 minutes. Who is faster?
- A. B
- B. Can't tell
- C. The same
- D. A
Choose the right answer
Answer:
8.A, B and C each run 100 m, taking 13, 12 and 20 seconds. Who is the fastest?
- A. C
- B. All the same
- C. B
- D. A
Choose the right answer
Answer:
9.A, B and C each run 100 m, taking 15, 12 and 14 seconds. Who is the fastest?
- A. B
- B. A
- C. C
- D. All the same
Choose the right answer
Answer:
10.A walks 150 m in 2 minutes and B walks 540 m in 6 minutes. Who is faster?
- A. Can't tell
- B. The same
- C. B
- D. A
Choose the right answer
Answer:
11.A runs 72 m in 8 seconds and B runs 56 m in 7 seconds. A is faster than B.
True or false?
Answer:
12.A runs 42 m in 7 seconds and B runs 8 m in 2 seconds. A is faster than B.
True or false?
Answer:

13.A minibus travels 12 km in 15 minutes and a bus 21 km in 30 minutes. Which is faster?
- A. The minibus
- B. Can't tell
- C. The bus
- D. The same
Choose the right answer
Working:
Answer:
14.Ka-lok types 170 words in 5 minutes and Chi-keung types 216 words in 8 minutes. How many more words a minute does the faster typist type?
Working:
Answer:
15.Two snails race. A crawls 18 squares in 3 minutes and B 12 squares in 4 minutes. How many more squares a minute does the faster one crawl?
Working:
Answer:
16.Ka-yee runs 100 m in 12 seconds and Ming in 20 seconds. They start together. When Ka-yee finishes, how far is Ming from the finish, in m?
Working:
Answer:
17.Ka-yee runs 100 m in 15 seconds and Chi-keung in 25 seconds. They start together. When Ka-yee finishes, how far is Chi-keung from the finish, in m?
Working:
Answer:
18.Ka-lok types 102 words in 3 minutes and Tsz-hin types 190 words in 5 minutes. How many more words a minute does the faster typist type?
Working:
Answer:

Show the answers and working

Comparing speeds worksheet: Answers and working

1. 93 skips
Share the 558 skips equally over 6 minutes: how many in each minute?
Skips a minute = skips ÷ minutes: 558 ÷ 6 = 93.
2. 109 skips
Share the 218 skips equally over 2 minutes: how many in each minute?
Skips a minute = skips ÷ minutes: 218 ÷ 2 = 109.
3. 5 m
Find each one's metres per minute first: 110 ÷ 2 and 300 ÷ 6.
A: 55 m/min; B: 50 m/min; 5 m apart.

4. C. B
They all ran for the same 10 seconds. Compare who went furthest.
In the same time, whoever goes furthest is fastest.
5. D. B
They run the same distance. Who takes less time?
Over the same distance, less time means faster: the one who took 16 seconds is faster.
6. C. B
They run the same distance. Who takes less time?
Over the same distance, less time means faster: the one who took 19 seconds is faster.
7. D. A
Their times differ, so the distances alone don't tell. Find each one's metres per minute first.
A: 80 m/min; B: 60 m/min; compare them.
8. C. B
They all ran the same 100 m. Compare who took the least time.
Over the same distance, whoever takes least time is fastest.
9. A. B
They all ran the same 100 m. Compare who took the least time.
Over the same distance, whoever takes least time is fastest.
10. C. B
Their times differ, so the distances alone don't tell. Find each one's metres per minute first.
A: 75 m/min; B: 90 m/min; compare them.
11. True
A runs further, but the times differ too. Find each one's metres per second first.
A goes further but takes longer too: A 9 m/s, B 8 m/s.
12. True
A runs further, but the times differ too. Find each one's metres per second first.
A goes further but takes longer too: A 6 m/s, B 4 m/s.

Marking: 2 for the working, 1 for the answer, 1 for the sentence.

13. A. The minibus
Their times differ, so turn both into km/h first.
Per hour: the minibus 48 km/h, the bus 42 km/h.
14. 7 words
The times differ, so find each one's words a minute first: 170 ÷ 5 and 216 ÷ 8.
Ka-lok: 34 a minute; Chi-keung: 27; 7 apart.
15. 3 squares
Find each snail's squares a minute first: 18 ÷ 3 and 12 ÷ 4.
A: 18 ÷ 3 = 6 a minute; B: 12 ÷ 4 = 3; 3 apart.
16. 40 m
When Ka-yee finishes, 12 seconds have passed. How far does Ming run a second, and so in those 12 seconds?
Ming runs 100 ÷ 20 m/s, so in 12 seconds 100 × 12 ÷ 20 = 60 m; 100 − 60 = 40.
17. 40 m
When Ka-yee finishes, 15 seconds have passed. How far does Chi-keung run a second, and so in those 15 seconds?
Chi-keung runs 100 ÷ 25 m/s, so in 15 seconds 100 × 15 ÷ 25 = 60 m; 100 − 60 = 40.
18. 4 words
The times differ, so find each one's words a minute first: 102 ÷ 3 and 190 ÷ 5.
Ka-lok: 34 a minute; Tsz-hin: 38; 4 apart.

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