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Class 6 Computer Science — Storage and memory

Measure information in bits and bytes, work out the bigger units from the smaller ones, and tell memory that forgets from storage that keeps.

Name: ________________________

  1. 1.Put these units of information in order, smallest first.

    • Megabyte
    • Bit
    • Terabyte
    • Kilobyte
    • Byte
    • Gigabyte

  2. 2.Match each unit to how many of the next unit down it holds.

    • 1 byte
    • 1 kilobyte
    • 1 megabyte
    • 1 gigabyte
    • 1024 megabytes
    • 1024 kilobytes
    • 1024 bytes
    • 8 bits

  3. 3.One kilobyte is 1024 bytes. A short note takes 2048 bytes. How many kilobytes is the note?

  4. 4.One megabyte is 1024 kilobytes. A photograph is 2 megabytes. How many kilobytes is that?

  5. 5.One byte is made of 8 bits. How many bits are there in 5 bytes?

  6. 6.One byte is made of 8 bits. How many bits are there in 12 bytes?

  7. 7.Each letter you type takes one byte, and one byte is 8 bits. How many bits does a word of 6 letters take?

  8. 8.Which of these units is the largest?

    • a) Kilobyte
    • b) Gigabyte
    • c) Megabyte
    • d) Byte

Answer key — Class 6 Computer Science — Storage and memory

  1. 1. 1. Bit 2. Byte 3. Kilobyte 4. Megabyte 5. Gigabyte 6. Terabyte
  2. 2. 1 byte → 8 bits; 1 kilobyte → 1024 bytes; 1 megabyte → 1024 kilobytes; 1 gigabyte → 1024 megabytes
  3. 3. 2
  4. 4. 2048
  5. 5. 40
  6. 6. 96
  7. 7. 48
  8. 8. b) Gigabyte