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Grade 9 Binary Numbers Worksheet with Answers
Grade 9 (US) · Year 10 (UK) · Class 9 (India) · Computer Science
Unit 1: Data RepresentationBinary ArithmeticCSTA 3A-DA-09
Converting between binary and decimal with place values 1, 2, 4, 8 … and adding binary numbers. 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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Practice Sheetaethelsystems.comBinary Numbers
Grade 9 · Computer Science
Name
Class
Date
Learning goal: Binary Arithmetic · CSTA 3A-DA-09
Directions: Read each question carefully and write your answer on the line. Use the diagram to help you.
RememberBinary place values
- 1
Write the decimal number 111 in binary.
- 2
What is the binary number 100000 in decimal?
- 3
Write the decimal number 155 in binary.
- 4
Write the decimal number 163 in binary.
- 5
Write the decimal number 239 in binary.
- 6
Write the decimal number 120 in binary.
- 7
Write the decimal number 122 in binary.
- 8
Write the decimal number 182 in binary.
- 9
What is the binary number 1110000 in decimal?
- 10
What is the binary number 110010 in decimal?
- 11
What is the binary number 110110 in decimal?
- 12
What is the binary number 10110000 in decimal?
★ Challenge corner for fast finishers
In a list of every 4-bit pattern, how many patterns have exactly one 1?
How did I do?
Teacher's comments
Free printable worksheets with answer keys · aethelsystems.com/worksheets/computer/9/binary_numbers
Answer key — Binary Numbers (Grade 9)
- 1.1101111
- 2.32
- 3.10011011
- 4.10100011
- 5.11101111
- 6.1111000
- 7.1111010
- 8.10110110
- 9.112
- 10.50
- 11.54
- 12.176
- ★4
Answer key (click to show)
- 1.1101111
- 2.32
- 3.10011011
- 4.10100011
- 5.11101111
- 6.1111000
- 7.1111010
- 8.10110110
- 9.112
- 10.50
- 11.54
- 12.176
- ★4 (challenge corner)
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