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Grade 9 Hexadecimal Worksheet with Answers

Grade 9 (US) · Year 10 (UK) · Class 9 (India) · Computer Science

Unit 1: Data RepresentationHexadecimalCSTA 3A-DA-09

Converting between hexadecimal, decimal and binary, and reading hex colour codes. This free high 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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Hexadecimal

Grade 9 · Computer Science

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Name

Class

Date

Learning goal: Hexadecimal · CSTA 3A-DA-09

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

RememberHexadecimal (base 16)

Digits0–9, then A=10 … F=15Two places16s and 1s2F = 2×16 + 15 = 47Hex ↔ binary1 hex digit = 4 bitsF = 1111, A = 1010
  1. 1

    Convert the hexadecimal number 31 to 8-bit binary.

    16s31s1A=10 B=11 C=12D=13 E=14 F=15
  2. 2

    What is the hexadecimal number BC in decimal?

    16sB1sCA=10 B=11 C=12D=13 E=14 F=15
  3. 3

    Convert the hexadecimal number 35 to 8-bit binary.

    16s31s5A=10 B=11 C=12D=13 E=14 F=15
  4. 4

    What is the hexadecimal number 66 in decimal?

    16s61s6A=10 B=11 C=12D=13 E=14 F=15
  5. 5

    What is the hexadecimal number E5 in decimal?

    16sE1s5A=10 B=11 C=12D=13 E=14 F=15
  6. 6

    Write the decimal number 39 in hexadecimal.

    16s1sA=10 B=11 C=12D=13 E=14 F=15
  7. 7

    What is the hexadecimal number F1 in decimal?

    16sF1s1A=10 B=11 C=12D=13 E=14 F=15
  8. 8

    Convert the hexadecimal number FD to 8-bit binary.

    16sF1sDA=10 B=11 C=12D=13 E=14 F=15
  9. 9

    Convert the hexadecimal number EF to 8-bit binary.

    16sE1sFA=10 B=11 C=12D=13 E=14 F=15
  10. 10

    What is the hexadecimal number DE in decimal?

    16sD1sEA=10 B=11 C=12D=13 E=14 F=15
  11. 11

    What is the hexadecimal number 19 in decimal?

    16s11s9A=10 B=11 C=12D=13 E=14 F=15
  12. 12

    What is the hexadecimal number BE in decimal?

    16sB1sEA=10 B=11 C=12D=13 E=14 F=15

★ Challenge corner for fast finishers

In a list of every 3-bit pattern, how many patterns have exactly one 1?

421

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Teacher's comments

Free printable worksheets with answer keys · aethelsystems.com/worksheets/computer/9/hexadecimal

Answer key (click to show)
  1. 1.00110001
  2. 2.188
  3. 3.00110101
  4. 4.102
  5. 5.229
  6. 6.27
  7. 7.241
  8. 8.11111101
  9. 9.11101111
  10. 10.222
  11. 11.25
  12. 12.190
  13. ★3 (challenge corner)

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