Data and charts · Ages 9–10
Bigger bar charts and rounding worksheet
Covers: Reading bar charts with big numbers, Starting line graphs (broken line graphs), Rounding to tens and hundreds, Making bar charts with big scales, Venn and Carroll diagrams
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Bigger bar charts and rounding worksheet
Data and charts · Ages 9–10
Numsprite
numsprite.com
Name:Date:Score:／48
Write each answer in the space. For word problems, show your working and write a sentence answer.
Part A: Working out and filling in (2 marks each)
1.The bar chart shows how many of four foods there are. How many 🍓 are there?
Answer:
2.The bar chart shows how many of four foods there are. How many are there altogether?
Answer:
3.The line graph shows the temperature (°C) at different times of one day. What was the highest temperature that day, in °C?
Answer:
4.The line graph shows the temperature (°C) at different times of one day. From 10:00 to 13:00, by how many °C did the temperature rise?
Answer:
5.6649 rounded to the nearest hundred is .
Answer:
6.426 rounded to the nearest ten is .
Answer:
7.Each square on a bar chart stands for 100. The value 556 is first rounded to the nearest hundred. How many squares high is the bar?
Answer:
8.The Venn diagram shows how many children in a group like swimming (A) and running (B). How many like swimming altogether?
Answer:
9.The Venn diagram shows how many children in a group like swimming (A) and running (B). How many like at least one of them?
Answer:
Part B: Choose, or true or false (2 marks each)
10.What does each square up the side of this bar chart stand for?
- A. 100
- B. 1
- C. 1000
- D. 200
Choose the right answer
Answer:
11.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. 09:00 to 12:00
- B. 06:00 to 09:00
- C. 15:00 to 18:00
- D. 12:00 to 15:00
Choose the right answer
Answer:
12.🍎 300, 🍓 1000, 🍌 700, 🍪 500. Which bar chart shows this data correctly?
- A
- B
- C
- D
Choose the right picture
Answer:
Part C: Word problems (4 marks each)
13.The bar chart shows how many of four foods a shop sold in a week. How many 🍓 and 🍌 were sold altogether?
Working:
Answer:
14.The bar chart shows how many of four foods a shop sold in a week. Each 🍌 sells for $8. How much did the 🍌 bring in?
Working:
Answer:
15.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:
Answer:
16.Ka-yee says a book has “about 250 pages”, rounding the pages to the nearest ten. What is the fewest pages it can have?
Working:
Answer:
17.Chi-keung asks 43 friends their favourite sport: 7 like swimming, 17 like running and the rest like ball games. How many like ball games?
Working:
Answer:
18.Of 49 people, 11 like cats, 17 like dogs, and 1 like both. How many like neither?
Working:
Answer:
Show the answers and working
Bigger bar charts and rounding worksheet: Answers and working
Part A: Working out and filling in
1. 90
The gap between neighbouring lines up the side is what one square stands for. Then look at the top of the 🍓 bar.
Each square stands for 10; the 🍓 bar's top lines up with 90.
2. 2600
Find what a square stands for, then read off the value of each of the four bars.
Read each bar and add: 1000 + 700 + 400 + 500 = 2600.
3. 26°C
Read the scale's step first, then find the highest point on the graph.
The highest point lines up with 26 on the scale: 26°C.
4. 4°C
Read the temperatures at 10:00 and 13:00, then take the earlier one from the later.
The later point minus the earlier: 22 − 18 = 4.
5. 6600
To round to the nearest hundred, look only at the tens digit of 6649.
Look at the tens, 4: 0–4 round down, 5–9 round up: 6600.
6. 430
To round to the nearest ten, look at the ones digit of 426.
Look at the ones, 6: 0–4 round down, 5–9 round up: 430.
7. 6 squares
First round 556 to the nearest hundred (look at the tens), then count the hundreds.
556 rounds to 600, and 600 ÷ 100 = 6 squares.
8. 16 children
Everyone who likes swimming is inside ring A, and that includes the overlap.
Everyone in ring A likes swimming: 15 in A only plus 1 in the overlap, 16.
9. 35 children
At least one means inside either ring; leave out those outside both.
Everyone inside the rings, but not outside: 13 + 8 + 14 = 35.
Part B: Choose, or true or false
10. A. 100
Read the numbers up the side: how far apart are two neighbouring lines?
Neighbouring lines up the side are 100 apart, so each square stands for 100.
11. D. 12:00 to 15:00
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 10°C.
12. A
Read each chart's scale, then check the 🍎 bar reaches 300; check the other bars the same way.
Find what a square stands for, then check each bar against the data.
Part C: Word problems
Marking: 2 for the working, 1 for the answer, 1 for the sentence.
13. 550 items
Find what a square stands for, then read the 🍓 and 🍌 bars one at a time.
The bars show 200 🍓 and 350 🍌 sold: 200 + 350 = 550 altogether.
14. 480 dollars
Read how many 🍌 were sold first, then think about 8 dollars for each.
60 🍌 were sold: 60 × 8 = 480.
15. 8 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 8 cm.
16. 245 pages
For a number below 250, which ones digits round up to 250?
Below 250, only ones of 5 or more round up to it: the fewest is 245.
17. 19 friends
The three groups add up to 43. First find how many like swimming or running between them.
The frequency table adds up to the total: 43 − 7 − 17 = 19.
18. 22 people
First find how many like at least one: 11 + 17 counts those who like both twice.
At least one: 11 + 17 − 1 (counting both once); 49 less that is neither: 22.
Numsprite · numsprite.com/en/worksheets/bar-charts-with-large-numbers-and-rounding
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