Term 1 Primary 6 Lesson Review

What is a Binary System?

Answer explanation

The binary system is a number system that uses only two symbols: 0 and 1. It is the basis for all binary code used in computing systems. Binary numbers are used to represent all sorts of data, including numbers, letters, and images.

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Binary System

Data Representation

What is the binary system used for?

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Binary System

Data Representation

In the binary system, what are the two symbols used to represent data?

• 0 and 1
• X and Y
• A and B
• 2 and 3

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Binary System

Data Representation

What does '01001000' represent in binary?

• 73
• 64
• 72
• 68

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Binary System

Data Representation

What is the decimal equivalent of the binary number 11111111?

• 255
• 256
• 127
• 512

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Binary System

Data Representation

Which of the following is the correct way to convert a binary number to a decimal number?

• Multiply each digit by 10 raised to the power of its position and sum up the results.
• Divide each digit by 2 and sum up the results.
• Multiply each digit by 2 raised to the power of its position and sum up the results.
• Add each digit to the previous digit.

Tags

Binary System

Data Representation