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Grade 7 Tracing Code (Python) Worksheet with Answers

Grade 7 (US) · Year 8 (UK) · Class 7 (India) · Computer Science

Unit 5: Going FurtherAdvanced: Reading CodeCSTA 2-AP-12Advanced

Reading short Python programs with variables, if/else and loops and working out what they print. This free middle school worksheet has 12 questions and a full answer key. Print it or save it as a PDF — every answer is checked by code, not guessed.

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Tracing Code (Python)

Grade 7 · Computer Science

Score___ / 12

Name

Class

Date

Learning goal: Advanced: Reading Code · CSTA 2-AP-12

Directions: Read each question carefully and write your answer on the line. Use the diagram to help you.

RememberReading Python

x = 5store 5 in xrange(1, 4)1, 2, 3(stops before 4)// and %7 // 2 = 37 % 2 = 1Indentindented linesbelong to the loop/if
  1. 1

    What does this program print?

    1word = "ALGORITHM"2print(word[1] + word[-1])
  2. 2

    What does this program print?

    1word = "COMPUTER"2print(word[3] + word[-1])
  3. 3

    What does this program print?

    1word = "PYTHON"2print(word[0] + word[-1])
  4. 4

    What does this program print?

    1total = 02for i in range(1, 6):3total = total + i * 24print(total)
  5. 5

    What does this program print?

    1x = 102if x > 17:3print("big")4elif x == 17:5print("equal")6else:7print("small")
  6. 6

    What does this program print?

    1x = 92if x > 13:3print("big")4elif x == 13:5print("equal")6else:7print("small")
  7. 7

    What does this program print?

    1total = 02for i in range(1, 4):3total = total + i * 24print(total)
  8. 8

    What does this program print?

    1total = 02for i in range(1, 5):3total = total + i * 34print(total)
  9. 9

    What does this program print?

    1x = 222if x > 11:3print("big")4elif x == 11:5print("equal")6else:7print("small")
  10. 10

    What does this program print?

    1total = 02for i in range(1, 5):3total = total + i * 24print(total)
  11. 11

    What does this program print?

    1total = 02for i in range(1, 4):3total = total + i * 34print(total)
  12. 12

    What does this program print?

    1total = 02for i in range(1, 4):3total = total + i * 14print(total)

★ Challenge corner for fast finishers

What is the largest whole number you can store in 6 bits?

32116181412111

How did I do?

Teacher's comments

Free printable worksheets with answer keys · aethelsystems.com/worksheets/computer/7/code_tracing

Answer key (click to show)
  1. 1.LM
  2. 2.PR
  3. 3.PN
  4. 4.30
  5. 5.small
  6. 6.small
  7. 7.12
  8. 8.30
  9. 9.big
  10. 10.20
  11. 11.18
  12. 12.6
  13. ★63 (challenge corner)

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