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C. Competency-based/Application-based questions:
1. Manik was exploring the binary number system and came across the number (1010101)₂. He was
curious to know whether its decimal equivalent would be odd or even. Without performing the
actual calculation can you help Manik figure out whether (1010101)₂ is odd or even?
2. A group of friends were playing a game called "Guess it right and quick." In the game, they had to
figure out the correct number based on a code. Amaan gave Nishi the number "15" but told her
it was in octal (a different number system). Help Nishi figure out what Amaan’s number is.
D. Solve the following:
1. Convert the following decimal into binary:
a. (41) b. (165) c. (74)
10 10 10
2. Convert the following binary into decimal:
a. (1001) b. (110) c. (1111)
2 2 2
#Interdisciplinary
Higher Order Thinking Skills (HOTS)
1. Guess my birthdate. 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.
2. Convert your house number into binary form.
#Problem Solving & Logical Reasoning
Crack The Code #Coding & Computational Thinking
Perform the following operations on binary numbers:
1. Add (1001) and (100) __________
2 2
2. Subtract (10101) from (11001) __________
2 2
3. Add (1011) and (1001) __________
2 2
4. Subtract (10100) from (101011) __________
2 2
#Communication
Let’s Explore #Collaboration & Teamwork
Surf the internet and read about different Sustainable Development Goals. Make a list
of all the SDG’s and discuss them with your peer group. As per the current scenario,
which SDG do you think is most difficult to achieve? Convert that SDG Goal (decimal)
number to Binary form.
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iPlus (Ver. 2.1)-VII

