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21 st
G. Competency-based/Application-based questions. Century #Technology Literacy
Skills
1. Prashant noticed the given numbers while working, (256) and (2AF) . Which number
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system do they belong to? How can he tell?
2. Yash and Eklavya measured their height and were trying to find the difference in
binary numbers. If the difference is 155 millimeters, what will be its binary conversion?
SDG Activity
You are in charge of decorating your school’s Annual Day event with a limited
budget. To ensure efficient use of resources, make a list of supplies with their
quantities and calculate the total cost. Convert the total price into binary and
count the number of digits. Compare whether there are more digits in the
decimal or binary representation.
21 st #Technology Literacy
Century #Information Literacy
Skills
In the lab
Solve the following:
1. Convert (10111011) into its decimal equivalent.
2
2. Subtract (1101) from (100110) .
2 2
3. Add the following binary numbers.
a. (1000) and (101) b. (1011) and (101) c. (1001) and (101)
2 2 2 2 2 2
d. (1111) and (1111) e. (11001) and (10101)
2 2 2 2
4. Convert the following decimal numbers into binary.
a. (19) b. (98) c. (75)
10 10 10
d. (37) e. (54)
10 10
Teacher's Corner
1. Talk to the students about the importance of number systems and their use in computers.
2. Do a detailed walk-through of the decimal and binary number systems and their different operations in a
mathematically rigorous manner.
3. Give a brief on the octal and hexadecimal number systems.
16 Play (Ver. 2.1)-VIII

