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Grade 9 Bits, Bytes & Data Sizes Worksheet with Answers

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

Unit 1: Data RepresentationData SizesCSTA 3A-DA-09

Converting between bits, bytes, KB, MB and GB, and working out file sizes and storage. 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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Bits, Bytes & Data Sizes

Grade 9 · Computer Science

Score___ / 12

Name

Class

Date

Learning goal: Data Sizes · CSTA 3A-DA-09

Directions: Read each question carefully and write your answer on the line.

Example

How many bits are in 4 bytes?

Answer: 32

RememberData sizes

bit0 or 1byte8 bitsKB1,000 bytesMB1,000 KBGB1,000 MB
  1. 1

    How many bits are in 2 bytes?

  2. 2

    How many kilobytes (KB) are in 6 MB? (Use 1 MB = 1,000 KB.)

  3. 3

    How many bits are in 11 bytes?

  4. 4

    How many kilobytes (KB) are in 9 MB? (Use 1 MB = 1,000 KB.)

  5. 5

    How many bits are in 8 bytes?

  6. 6

    How many kilobytes (KB) are in 7 MB? (Use 1 MB = 1,000 KB.)

  7. 7

    How many bits are in 3 bytes?

  8. 8

    A memory card holds 4 GB. Each photo is 5 MB. How many photos fit? (Use 1 GB = 1,000 MB.)

  9. 9

    A memory card holds 32 GB. Each photo is 5 MB. How many photos fit? (Use 1 GB = 1,000 MB.)

  10. 10

    How many bits are in 12 bytes?

  11. 11

    How many kilobytes (KB) are in 8 MB? (Use 1 MB = 1,000 KB.)

  12. 12

    How many kilobytes (KB) are in 2 MB? (Use 1 MB = 1,000 KB.)

★ Challenge corner for fast finishers

What is the largest whole number you can store in 9 bits?

2561128164132116181412111

How did I do?

Teacher's comments

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

Answer key (click to show)
  1. 1.16
  2. 2.6000
  3. 3.88
  4. 4.9000
  5. 5.64
  6. 6.7000
  7. 7.24
  8. 8.800
  9. 9.6,400
  10. 10.96
  11. 11.8000
  12. 12.2000
  13. ★511 (challenge corner)

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