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21 st
COMPETENCY-BASED QUESTIONS Century #Critical Thinking
Skills #Technology Literacy
1. Anshika is helping her younger brother with his homework. He is confused about why 345 in decimal
is not written using letters of the alphabets or special characters. How will Anshika explain the base
and digit range of the decimal system?
2. Krish is playing a coding game where he comes across the binary number 110101.
He needs to find its decimal equivalent to unlock the next level. Please help him.

LAB LEARNING 21 st
Century #Critical Thinking
Skills #Technology Literacy
1. Find out the size of your hard drive in gigabytes (GB). Convert this decimal value into the
binary and octal number systems.
2. Open any folder that contains Excel, Word or PowerPoint files. Note down their sizes in
megabytes (MB). Convert these sizes into binary and hexadecimal number systems.

CODE CHECK Century #Critical Thinking
21 st
Skills
1. A computer system stores data in 4 bytes. How many bits of data does the system store?
2. Guess my date of birth. I was born in the 9th month of the year. My date of birth is ‘10111’ in
binary and the year is ‘3675’ in octal.

21 st #Communication
Century
Skills #Information Literacy
Organise a group discussion where students explore and compare various number systems
like binary, decimal, octal and hexadecimal. Encourage them to share real-world applications
and learn from each other’s insights.

JOB JUNCTION
People who are experts in number systems may pursue careers as Software Developers, Data
Analysts, Network Engineers or Computer Scientists.

PEDAGOGY PATHWAYS

« Demonstrate the concept of number systems using real-life examples.
« Provide hands-on activities for converting between different number systems.

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