Lesson T3.2.1
T3.2.1 Representing numbers in binary Quiz: KS3 Computing, Unit 3
20 questions
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Lesson T3.2.1, Representing numbers in binary: 20 multiple choice questions for the KS3 Computing (National Curriculum), Unit 3: Boolean logic and binary, written with Revision Ninja.
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The 20 questions
-
What number system uses only the digits 0 and 1?
- Hexadecimal
- Binary
- Decimal
- Roman
-
What is the decimal value of the binary number 101?
- 3
- 6
- 101
- 5
-
What is 1111 in decimal?
- 16
- 11
- 15
- 4
-
How many different values can 4 bits represent?
- 4
- 8
- 16
- 15
-
What is the decimal value of 00001000?
- 1
- 10
- 8
- 1000
-
What is the largest value that an 8-bit unsigned binary number can hold?
- 256
- 128
- 1023
- 255
-
What are the place values of the bits in an 8-bit binary number from left to right?
- 100, 50, 25, 12, 6, 3, 1, 0
- 128, 64, 32, 16, 8, 4, 2, 1
- 8, 16, 24, 32, 40, 48, 56, 64
- 1, 2, 4, 8, 16, 32, 64, 128
-
What is 10000000 in decimal?
- 256
- 64
- 128
- 1
-
Which binary number represents the decimal value 6?
- 1001
- 101
- 110
- 111
-
Which binary number represents the decimal value 9?
- 1100
- 1010
- 1001
- 0111
-
What is the binary number 1010 in decimal?
- 10
- 8
- 12
- 5
-
A pupil is storing the number 3 in binary using 4 bits. Which pattern is correct?
- 1100
- 0011
- 0101
- 0110
-
Why do computers use binary?
- Binary is easier for humans to write than any other number system
- Binary removes the need for any memory
- Electronic circuits can easily represent two states, on and off
- Binary is the only system that can represent letters
-
What is a bit?
- A group of eight bytes stored together
- A unit that measures screen brightness
- A single binary digit, either 0 or 1
- A letter typed on a keyboard
-
What is the decimal value of 11110000?
- 224
- 15
- 240
- 128
-
Which binary number is the decimal value 12?
- 1001
- 1100
- 1110
- 1011
-
What is 00000001 in decimal?
- 1
- 10
- 0
- 2
-
A byte has how many bits?
- 8
- 10
- 4
- 16
-
What is the decimal value of the binary number 10?
- 10
- 0
- 2
- 1
-
What is the decimal value of the binary number 111?
- 7
- 5
- 8
- 3
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