Year 7 Understanding Computers - Lesson 3 recap

How many states are possible with 1 switch in binary representation?

• 1

• 2

• 3

• 4

What is the decimal equivalent of the binary number 011?

• 1

• 2

• 3

• 4

What is the sum of the place values in the binary number 101?

• 3

• 5

• 6

• 7

What is the binary equivalent of the decimal number 51?

• 110011

• 110101

• 101011

• 111001

How can you tell if a binary number is even?

• The last digit is 0

• The last digit is 1

• The first digit is 0

• The first digit is 1

Convert 5,000 megabytes to gigabytes.

• 5 gigabytes

• 50 gigabytes

• 500 gigabytes

• 0.5 gigabytes

How many gigabytes are in 1.5 terabytes?

• 1,500 gigabytes

• 150 gigabytes

• 15 gigabytes

• 1,050 gigabytes

How many bytes are there in 64 bits?

• 8 bytes

• 64 bytes

• 16 bytes

• 32 bytes

What is the pattern for converting gigabytes to megabytes?

• Multiply by 1,000

• Divide by 1,000

• Multiply by 100

• Divide by 100

How many bits are in a byte?

• 8 bits

• 16 bits

• 32 bits

• 64 bits