Exercise 2.1 of Chapter 2 introduces you to arithmetic expressions involving variables, numbers, and operations like addition, subtraction, multiplication, and division. You will be practicing how to write expressions based on simple statements, and how to solve or simplify them. These fundamentals are essential for future use of algebra in school.
The exercise is developed according to the latest CBSE guidelines and follows the NCERT syllabus. It also provides you with a strong foundation, to develop and use expressions. The NCERT Solutions will provide you with simple step-by-step solutions for clear understanding.
This exercise will help to develop your understanding of the language of mathematics and develop your problem-solving abilities. Also, this would be helpful if you are to attempt competitions like the Olympiads. With regular practice you will have the confidence to solve questions related to expressions.in your school examinations.
Exercise 2.1 helps you create and interpret arithmetic expressions with simple examples and the NCERT Solutions for Class 7 Maths Chapter 2 provide step by step solutions for all the questions. Click the link below to download the free pdf and practice at your own pace.
Exercise 2.1 focuses on understanding expressions using basic arithmetic operations and variables. Some of the key concepts are listed below:
1. Fill in the blanks to make the expressions equal on both sides of
the = sign:
(a) 13+4=…+6
(b) 22+…=6×5
(c) 8×_=64÷2
(d) 34−…=25
Sol. (a) 13+4=17
11+6=17
Therefore, 13+4=11+6
(b) Since 6×5=30
22+8=30
Therefore, 22+8=6×5
(c) Since 64÷2=32
8×4=32
Therefore, 8×4=64÷2
(d) Since 34−25=9
Therefore, 34−9=25
2. Arrange the following expressions in ascending (increasing) order of their values.
(a) 67-19
(b) 67-20
(c) 35+25
(d) 5×11
(e) 120÷3
Sol. (a) 67−19=48
(b) 67−20=47
(c) 35+25=60
(d) 5×11=55
(e) 120÷3=40
Since 40<47<48<55<60
Therefore, 120÷3<67−20<67−19<5
×11<35+25
Thus, (e)<(b)<(a)<(d)<(c)
(Session 2026 - 27)