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3A · Chapter 7 · Practice

Chapter review

Attempt independently, then review the full reasoning in the answer key.

Attempt independently, then review the full reasoning in the answer key. No name, account, or answer is transmitted to any server.

Assessment · 24 questions

Problems

Try the questions first. The complete answer key is provided separately to parents.

Check your work: Finish the problems first, then ask a parent or tutor to review them with the separate answer-key copy.

  1. A1

    Use the bar graph scale: how many books are shown for Science?

    Number of books012345678910MysteryScienceHistory
    Bar graph: read the key and scale carefully before solving.
  2. A2

    A bar chart shows values 9, 12 and 15. Explain what changes if all values double while the axis scale stays fixed.

  3. A3

    Use the pictograph key. How many books does Science represent?

    Key: ● represents 5 fruitsMysteryScienceHistory
    Pictograph: read the key and scale carefully before solving.
  4. A4

    Use the bar graph scale: how many books are shown for Science?

    Number of books051015202530354045MysteryScienceHistory
    Bar graph: read the key and scale carefully before solving.
  5. A5

    A pictograph has 4 stars for Class A and 6 for Class B. Each star means 3 points. Find the difference.

  6. A6

    Use the pictograph key. How many books does Science represent?

    Key: ● represents 2 fruitsMysteryScienceHistory
    Pictograph: read the key and scale carefully before solving.
  7. A7

    Use the pictograph key. How many items does Cans represent?

    Key: ● represents 5 fruitsPaperCansGlass
    Pictograph: read the key and scale carefully before solving.
  8. A8

    Which pictograph is clearer for data 6, 12 and 18: 1 symbol = 3 or 1 symbol = 7? Explain.

  9. A9

    Use the bar graph scale: how many vehicles are shown for Trains?

    Number of vehicles02468BusesTrainsBikes
    Bar graph: read the key and scale carefully before solving.
  10. A10

    Use the pictograph key. How many books does Science represent?

    Key: ● represents 2 fruitsMysteryScienceHistory
    Pictograph: read the key and scale carefully before solving.
  11. A11

    A survey table shows 8 reading votes, 12 art votes, and 16 sport votes. What is the total?

  12. A12

    Use the bar graph scale: how many vehicles are shown for Trains?

    Number of vehicles012345678BusesTrainsBikes
    Bar graph: read the key and scale carefully before solving.
  13. A13

    Use the pictograph key. How many items does Cans represent?

    Key: ● represents 2 fruitsPaperCansGlass
    Pictograph: read the key and scale carefully before solving.
  14. A14

    The class creates a bar graph for 14, 20, 26 books. Suggest an axis step and show the required tick labels through at least 26.

  15. A15

    Use the bar graph scale: how many vehicles are shown for Trains?

    Number of vehicles024681012141618BusesTrainsBikes
    Bar graph: read the key and scale carefully before solving.
  16. A16

    A table lists 11 red, 15 blue, and 10 green balloons. How many more blue than green?

  17. A17

    Why does a graph with intervals 0, 5, 10, 15 need equal distances between its marks?

  18. A18

    Use the bar graph scale: how many vehicles are shown for Trains?

    Number of vehicles0510152025303540BusesTrainsBikes
    Bar graph: read the key and scale carefully before solving.
  19. A19

    Use the pictograph key. How many books does Science represent?

    Key: ● represents 1 fruitMysteryScienceHistory
    Pictograph: read the key and scale carefully before solving.
  20. A20

    A graph has a bar for 40 that is drawn only one quarter as high as a bar for 20, using the same zero-based scale. What is wrong?

  21. A21

    Use the bar graph scale: how many books are shown for Science?

    Number of books02468101214MysteryScienceHistory
    Bar graph: read the key and scale carefully before solving.
  22. A22

    Use the pictograph key. How many books does Science represent?

    Key: ● represents 1 fruitMysteryScienceHistory
    Pictograph: read the key and scale carefully before solving.
  23. A23

    Use the pictograph key. How many books does Science represent?

    Key: ● represents 5 fruitsMysteryScienceHistory
    Pictograph: read the key and scale carefully before solving.
  24. A24

    Use the bar graph scale: how many books are shown for Science?

    Number of books05101520253035MysteryScienceHistory
    Bar graph: read the key and scale carefully before solving.
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