WorksheetsUnderstanding Number Systems and Storage
Total questions: 20
Worksheet time: 10mins
Which of the following is a base-2 number system?
Decimal
Binary
Octal
Hexadecimal
What is the binary equivalent of the decimal number 13?
1101
1011
1110
1001
Convert the binary number 101101 to decimal.
45
53
37
61
Which of the following is the hexadecimal representation of the decimal number 255?
1F
FF
F0
AF
What is the value of 25 in decimal?
10
16
32
64
Which of the following is NOT a type of number?
Rational number
Imaginary number
Real number
Fractional number
Which of the following is a natural number?
-3
½
7
-1
Which of the following is an irrational number?
43
0.25
2
5
How many bytes are there in a kilobyte (kB) according to the SI standard?
1000
1024
512
2048
How many bytes are there in a kibibyte (KiB)?
1000
1024
2048
512
Which of the following is the correct order from smallest to largest?
Byte, Kilobyte, Megabyte, Gigabyte
Kilobyte, Byte, Megabyte, Gigabyte
Megabyte, Kilobyte, Byte, Gigabyte
Byte, Megabyte, Kilobyte, Gigabyte
What is the decimal value of the hexadecimal number 1A?
16
26
18
21
Which of the following is a rational number?
π
3
27
5
How many bytes are there in a megabyte (MB) according to the SI standard?
1000
1024
1,000,000
1,048,576
How many bytes are there in a mebibyte (MiB)?
1,000,000
1,048,576
1024
1000
Which of the following is NOT a real number?
0
−5
2+3i
7
What is the binary representation of the decimal number 20?
10100
11000
10010
11100
Which of the following is an integer but not a natural number?
5
0
-2
1
Which prefix is used for 220 bytes?
Kilobyte
Megabyte
Mebibyte
Gigabyte
Which of the following is the correct conversion of the binary number 1111 to hexadecimal?
9
F
E
D
