Grade 7 Math: Pie Graphs
This worksheet helps students understand and interpret pie graphs, calculate percentages, and answer questions based on given data.
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Grade 7 Math: Understanding Pie Graphs
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Read each question carefully and answer to the best of your ability. Show all your work when necessary.
A pie graph (or circle graph) is a circular chart divided into sectors, illustrating numerical proportion. In a pie chart, the arc length of each sector (and consequently its central angle and area), is proportional to the quantity it represents.
Below is a pie graph showing how a group of students travel to school.
1. What percentage of students travel to school by car?
20%
25%
35%
40%
2. Which two modes of transport are used by the same percentage of students?
Bus and Car
Car and Walk
Walk and Bike
Bus and Bike
3. A pie graph is also known as a graph.
4. Each section of a pie graph represents a of the whole.
5. If there are 200 students in total, how many students travel by bus?
6. Explain one advantage of using a pie graph to display data.
7. The sum of all percentages in a pie graph must always be 100%.
True
False
8. Pie graphs are best for showing changes in data over time.
True
False
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