Data and charts · Ages 9–10

Starting line graphs (broken line graphs) worksheet

Part of: Bigger bar charts and rounding

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Data and charts · Ages 9–10

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

1.The line graph shows the temperature (°C) at different times of one day. What was the temperature at 08:00, in °C?
Answer:
2.The line graph shows the temperature (°C) at different times of one day. What was the highest temperature that day, in °C?
Answer:
3.The line graph shows the temperature (°C) at different times of one day. What was the temperature at 15:00, in °C?
Answer:
4.The line graph shows the temperature (°C) at different times of one day. What was the temperature at 12:00, in °C?
Answer:
5.The line graph shows the temperature (°C) at different times of one day. From 12:00 to 15:00, by how many °C did the temperature rise?
Answer:
6.The line graph shows the temperature (°C) at different times of one day. The highest was °C, the lowest °C, a difference of °C.
Fill in each blank
Answer:
7.The line graph shows the temperature (°C) at different times of one day. From 08:00 to 11:00, by how many °C did the temperature rise?
Answer:
8.The line graph shows the temperature (°C) at different times of one day. From 12:00 to 14:00, by how many °C did the temperature rise?
Answer:

9.The line graph shows the temperature (°C) at different times of one day. From 13:00 to 15:00, the temperature rose.
True or false?
Answer:
10.The line graph shows the temperature (°C) at different times of one day. In which stretch of time did the temperature rise the most?
- A. 11:00 to 14:00
- B. 14:00 to 17:00
- C. 17:00 to 20:00
- D. 08:00 to 11:00
Choose the right answer
Answer:
11.The line graph shows the temperature (°C) at different times of one day. From 14:00 to 16:00, the temperature rose.
True or false?
Answer:
12.The line graph shows the temperature (°C) at different times of one day. In which stretch of time did the temperature change the most (a rise or a fall)?
- A. 09:00 to 11:00
- B. 13:00 to 15:00
- C. 07:00 to 09:00
- D. 11:00 to 13:00
Choose the right answer
Answer:

13.May measures a bean sprout's height (cm) every day and draws a line graph. How many centimetres taller was it on Thursday than on Monday?
Working:
Answer:
14.The line graph shows a water tank's level (cm) at different times. Between two times next to each other, by how many centimetres did the level fall the most?
Working:
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15.The line graph shows how many umbrellas a shop sold each month from January to April. In which month did it sell the most?
- A. January
- B. April
- C. March
- D. February
Choose the right answer
Working:
Answer:
16.The line graph shows the temperature (°C) in London at different times of one day. How many °C apart were the day's highest and lowest temperatures?
Working:
Answer:
17.Ming measures a bean sprout's height (cm) every day and draws a line graph. How many centimetres taller was it on Wednesday than on Monday?
Working:
Answer:
18.Tsz-hin measures a bean sprout's height (cm) every day and draws a line graph. How many centimetres taller was it on Wednesday than on Monday?
Working:
Answer:

Show the answers and working

Starting line graphs (broken line graphs) worksheet: Answers and working

1. 18°C
First read where the scale starts and how much each step is, then find 08:00 along the bottom.
Go up from 08:00 to the point, then across to the scale: 18°C.
2. 30°C
Read the scale's step first, then find the highest point on the graph.
The highest point lines up with 30 on the scale: 30°C.
3. 28°C
First read where the scale starts and how much each step is, then find 15:00 along the bottom.
Go up from 15:00 to the point, then across to the scale: 28°C.
4. 32°C
First read where the scale starts and how much each step is, then find 12:00 along the bottom.
Go up from 12:00 to the point, then across to the scale: 32°C.
5. 2°C
Read the temperatures at 12:00 and 15:00, then take the earlier one from the later.
The later point minus the earlier: 22 − 20 = 2.
6. 34, 22, 12
Find the highest and lowest points, then read each one across to the scale.
The highest point is at 34 and the lowest at 22: 34 − 22 = 12.
7. 2°C
Read the temperatures at 08:00 and 11:00, then take the earlier one from the later.
The later point minus the earlier: 20 − 18 = 2.
8. 16°C
Read the temperatures at 12:00 and 14:00, then take the earlier one from the later.
The later point minus the earlier: 28 − 12 = 16.

9. True
Find the points at 13:00 and 15:00: does the line between them go up or down?
13:00: 24°C; 15:00: 32°C. A line going up is a rise; going down, a fall.
10. B. 14:00 to 17:00
Look at each stretch: only a line going up is a rise. Take each earlier point from the later one and compare.
A line going up means a rise, and the steeper, the bigger: take each stretch's difference; the most is 12°C.
11. False
Find the points at 14:00 and 16:00: does the line between them go up or down?
14:00: 26°C; 16:00: 16°C. A line going up is a rise; going down, a fall.
12. C. 07:00 to 09:00
Rises and falls both count: look for the steepest stretch, whichever way it slopes.
The steeper the line, the bigger the change, up or down: the biggest change is 12°C.

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

13. 2 cm
Read the heights on Monday and on Thursday from the graph, then subtract.
Monday: 3 cm; Thursday: 5 cm. 5 − 3 = 2.
14. 4 cm
Look only at the stretches going down. Find the steepest, then take the later point from the earlier.
A line going down is a fall, and the steepest falls most: the earlier point minus the later; the most is 4 cm.
15. D. February
The higher a month's point, the more umbrellas. Read the scale's step, then compare the four points.
The highest point is the most: 70.
16. 16°C
Find the highest and lowest points, then read off each temperature.
The highest point is 34°C and the lowest 18°C: 34 − 18 = 16.
17. 1 cm
Read the heights on Monday and on Wednesday from the graph, then subtract.
Monday: 4 cm; Wednesday: 5 cm. 5 − 4 = 1.
18. 6 cm
Read the heights on Monday and on Wednesday from the graph, then subtract.
Monday: 4 cm; Wednesday: 10 cm. 10 − 4 = 6.

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