Questions with Answers, Solution | Introduction to Algebra | Term 1 Chapter 2 | 6th Maths - Exercise 2.1 | 6th Maths : Term 1 Unit 2 : Introduction To Algebra
Chapter: 6th Maths : Term 1 Unit 2 : Introduction To Algebra
Exercise 2.1
Exercise
2.1
1. Fill in the blanks.
(i) The letters a, b, c, … x, y, z are used to represent _________. Answer: Variables.
(ii) A quantity that takes ___________ values is called a variable. Answer: Different
(iii) If there are 5 students in a bench, then the number of students
in ‘n’ benches is ‘5 × n’. Here ___________ is a variable.
2. Say True or False.
(i) 
The length of part B in the pencil shown is ‘a − 6’.
(ii) If the cost of an 
is ‘x’ and the cost of a 
is ₹5, then the total cost of fruits is ₹ ' x + 5'.
(iii) If there are 11 players in a team, then there will
be '11 + q' players in 'q' teams.
3. Draw the next two patterns and complete the table.
4.
Use a variable to write the rule, which gives the number of ice candy sticks required
to make the following patterns.
(a)
a pattern of letter C as 
(b)
a pattern of letter M as 
5. The teacher forms groups of five students in
a class. How many students will be there in ‘p’ groups?
Answer: = 5p
6.
Arivazhagan is 30 years younger to his father. Write Arivazhagan's age in terms
of his father's age.
Answer: Arivazhagan’s age = n − 30
7.
If ‘u’ is an even number, how would you represent
(i)
the next even number?
(ii)
the previous even number?
Objective
Type Questions
8.
Variable means that it
(a)
can take only a few values
(b)
has a fixed value
(c)
can take different values
(d)
can take only 8 values
Answer: (c) can take only a few values
9.
‘6y’ means
(a)
6 + y
(b)
6 – y
(c)
6 × y
(d)
6/y
Answer: (c) 6 × y
10.
Radha is ‘x’ years of age now. 4 years ago, her age was
(a)
x − 4
(b)
4 – x
(c)
4 + x
(d)
4x
Answer: (a) x − 4
11.
The number of days in ‘w’ weeks is
(a)
30 + w
(b)
30w
(c)
7 + w
(d)
7w
Answer: (d) 7w
12.
The value of ‘x’ in the circle is
(a)
6
(b)
8
(c)
21
(d)
22
Answer: (d) 22
Answers:
Exercise 2.1
1) (i) Variables (ii) Different (iii) n
2) (i) False (ii) True (iii) False
3) 
4) a) 3n b) 4n
5) 5p
6) Arivazhagan’s age is ‘n-30’
7) (i) u + 2 (ii) u – 2
Objective Type Questions
8) c) can take different values
9) c) 6 × y
10) a) x − 4
11) d) 7w
12) d) 22
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