Lesson 2 binary and decimal

What is the binary system?

• The binary system is a base-10 numeral system that uses ten symbols.
• The binary system is a color coding system that uses red and blue.
• The binary system is a method of organizing data in alphabetical order.
• The binary system is a base-2 numeral system that uses two symbols, 0 and 1.

Which of the following statements is true about binary numbers?

• Binary numbers can only represent positive integers.

• Each binary digit is known as a bit.

• Binary numbers are always longer than decimal numbers.

• Binary numbers are used exclusively in digital clocks.

How do you convert the binary number 1010 to decimal?

• It equals 8 in decimal.

• It equals 10 in decimal.

• It equals 12 in decimal.

• It equals 2 in decimal.

. How many digits are used in the binary system?

• 1
• 2
• 4
• 8

What does each position in a binary number represent?

• Each position represents a hexadecimal value.
• Each position represents a power of 10.
• Each position represents a power of 2.
• Each position represents a digit in the number.

In binary, what is the result of adding 1 + 1?

• 10
• 01
• 11

Which of the following is a valid binary operation?

• Subtracting binary numbers.

• Dividing binary numbers by 3.

• Multiplying binary numbers by 5.

• Adding binary numbers using decimal rules.

What is the binary equivalent of the decimal number 5?

• 101

• 100

• 110

• 111