Arithmetic Expressions
CBSE · Class 7 · Mathematics
Summary of Arithmetic Expressions for CBSE Class 7 Mathematics. Key concepts, important points, and chapter overview.
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Overview
Arithmetic expressions are mathematical phrases that have a value. The value is the number the expression evaluates to. Expressions can be read, compared, and evaluated using numbers and operations. Brackets, terms, and the properties of addition help in reading complex expressions correctly.
Key Concepts
A mathematical phrase formed with numbers
A mathematical phrase formed with numbers and operations that has a value. For example, 13 + 2 has value 15 and can be read as the sum of 13 and 2.
Expressions can be compared using =
Expressions can be compared using =, <, and > in the same way as numbers, because the comparison depends on their values.
Terms are the parts of
Terms are the parts of an expression separated by a + sign. All subtractions must first be converted into additions of the inverse to identify terms c
Subtracting a number is the same
Subtracting a number is the same as adding its inverse. The inverse of 14 is -14, and the inverse of -14 is 14.
When brackets are present
When brackets are present, the expression inside the brackets is evaluated first. Brackets remove confusion in expressions with more than one operatio
Learning Objectives
- Understand what an arithmetic expression is and how it is evaluated
- Compare expressions using =, <, and > based on their values
- Identify terms in expressions by rewriting subtraction as addition of the inverse
- Use brackets to control the order of evaluation
- Apply the commutative and associative properties of addition
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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