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Computational Skills
Mind Stretching
1. Write an algorithm and draw a flowchart for the following:
(a) To calculate and print the area and perimeter of a rectangle.
(b) To shut down a computer.
(c) To print all odd numbers from 1 to 30.
(d) To input marks of a student in five subjects and display the total and average
marks.
2. Write the output of the given 3. Given below is a flowchart to add
flowchart if the starting values of A numbers from 1 to 20. Identify
and C are 20 and 2 respectively. the errors in the flowchart and
draw the correct flowchart.
Start
Start
Read A & C
Sum = 0, N = 1
A = A × C
Sum = Sum + N
C = C + 2
N = N + 1
Is No
C > 10?
No
Yes Is N > 20?
Yes
Print A
Print Sum
Stop
Stop
DISCUSS Communication Skills
DISCUSS
Can a flowchart be drawn without writing an algorithm? Discuss with your classmates.
TEACHER’S DESK
TEACHER’S DESK
Explain to the students the concept of decision making and loops in flowcharts with examples.
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