Data and charts · Ages 9–10

Making bar charts with big scales worksheet

Part of: Bigger bar charts and rounding

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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.

1.Each square on a bar chart stands for 2. For a value of 12, how many squares high is the bar?
Answer:
2.Ka-yan records the favourite fruit of 12 friends: 🍓🍌🍎🍌🍌🍎🍎🍎🍌🍎🍎🍎. How many like 🍎?
Answer:
3.Each square on a bar chart stands for 2. For a value of 20, how many squares high is the bar?
Answer:
4.Ka-yee records the favourite fruit of 12 friends: 🍌🍓🍓🍎🍓🍓🍎🍌🍓🍌🍌🍓. How many like 🍎?
Answer:
5.Each square on a bar chart stands for 10. For a value of 20, how many squares high is the bar?
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6.Each square on a bar chart stands for 100. The value 827 is first rounded to the nearest hundred. How many squares high is the bar?
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7.Each square on a bar chart stands for 100. For a value of 200, how many squares high is the bar?
Answer:
8.The favourite fruit of 15 friends: 🍓🍎🍌🍌🍌🍎🍌🍎🍎🍌🍌🍓🍌🍌🍎. As a frequency table: 🍎 , 🍓 , 🍌 .
Fill in each blank
Answer:
9.The favourite fruit of 15 friends: 🍎🍓🍌🍓🍎🍎🍌🍓🍓🍓🍌🍌🍌🍎🍓. As a frequency table: 🍎 , 🍓 , 🍌 .
Fill in each blank
Answer:

13.Each square on a bar chart stands for 10 people. 28 people visit one day; rounded to the nearest ten first, how many squares high is the bar?
Working:
Answer:
14.In a week, the library's busiest day lent 515 books. For a bar chart with 10 squares up the side, what should each square stand for (5, 10, 20, 50 or 100)?
Working:
Answer:
15.Ka-yan asks 35 friends their favourite sport: 17 like swimming, 3 like running and the rest like ball games. How many like ball games?
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16.In a week, the library's busiest day lent 212 books. For a bar chart with 10 squares up the side, what should each square stand for (5, 10, 20, 50 or 100)?
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17.Ka-yan asks 42 friends their favourite sport: 6 like swimming, 5 like running and the rest like ball games. How many like ball games?
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Answer:
18.Each square on a bar chart stands for 10 people. 79 people visit one day; rounded to the nearest ten first, how many squares high is the bar?
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Answer:

Show the answers and working

Making bar charts with big scales worksheet: Answers and working

1. 6 squares
Each square is 2: how many lots of 2 make 12?
12 is 6 lots of 2: 12 ÷ 2 = 6, so the bar is 6 squares high.
2. 7 friends
Go left to right counting only the 🍎, ticking each one off so none is missed.
Count each 🍎, ticking it off: 7.
3. 10 squares
Each square is 2: how many lots of 2 make 20?
20 is 10 lots of 2: 20 ÷ 2 = 10, so the bar is 10 squares high.
4. 2 friends
Go left to right counting only the 🍎, ticking each one off so none is missed.
Count each 🍎, ticking it off: 2.
5. 2 squares
Each square is 10: how many lots of 10 make 20?
20 ÷ 10 = 2 squares.
6. 8 squares
First round 827 to the nearest hundred (look at the tens), then count the hundreds.
827 rounds to 800, and 800 ÷ 100 = 8 squares.
7. 2 squares
Each square is 100: how many lots of 100 make 200?
200 ÷ 100 = 2 squares.
8. 5, 2, 8
Count one fruit at a time, ticking each off; the three counts should add up to 15.
Count each kind: 5, 2, 8; they add to 15, so the count is right.
9. 4, 6, 5
Count one fruit at a time, ticking each off; the three counts should add up to 15.
Count each kind: 4, 6, 5; they add to 15, so the count is right.

10. D. 50
There are 10 squares: multiply each choice by 10 and see if it reaches 443. Of those that do, take the smallest.
Take the smallest that fits 443: 10 × 50 reaches 443.
11. C
Read each chart's scale, then check the 🍎 bar reaches 600; check the other bars the same way.
Find what a square stands for, then check each bar against the data.
12. D. 5
There are 10 squares: multiply each choice by 10 and see if it reaches 21. Of those that do, take the smallest.
Take the smallest that fits 21: 10 × 5 reaches 21.

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

13. 3 squares
Round 28 to the nearest ten first (look at the ones), then count the tens.
28 rounds to 30, and 30 ÷ 10 = 3 squares.
14. 100 books
There are 10 squares: multiply each choice by 10, see which reach 515, and take the smallest.
10 × the scale must reach 515, as small as possible: 100.
15. 15 friends
The three groups add up to 35. First find how many like swimming or running between them.
The frequency table adds up to the total: 35 − 17 − 3 = 15.
16. 50 books
There are 10 squares: multiply each choice by 10, see which reach 212, and take the smallest.
10 × the scale must reach 212, as small as possible: 50.
17. 31 friends
The three groups add up to 42. First find how many like swimming or running between them.
The frequency table adds up to the total: 42 − 6 − 5 = 31.
18. 8 squares
Round 79 to the nearest ten first (look at the ones), then count the tens.
79 rounds to 80, and 80 ÷ 10 = 8 squares.

Numsprite · numsprite.com/en/worksheets/bar-charts-with-large-numbers-and-rounding/drawing-bar-charts-with-scales