Algebraic expressions are the idea of expressing numbers using letters or alphabets without specifying their actual values. The basics of algebra taught us how to express an unknown value using letters such as x, y, z, etc. These letters are called here as variables.
There are some words and phrases which imply that they need to be represented as a math operation involving addition, subtraction, multiplication and division, as well as the inclusion of algebraic terms. These words or phrases can also be used to describe a relationship between variables and constants. Hence, these phrases can be transformed into an algebraic expression. This process of writing an expression from a phrase is known as writing an algebraic expression.
Let us take a look at a few examples on writing algebraic expressions:
1. 7 more than a number x – this is a phrase that needs to be represented as an expression.
‘More than’ implies an addition operation, so,
x + 7 is the required algebraic expression for the given phrase.
2. Similarly, for the phrase, 2 times b, the word times implies a multiplication operation or we need to find the product.
So the algebraic expression for this statement is, 2 × b.
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Answer:
Algebraic expressions are the idea of expressing numbers using letters or alphabets without specifying their actual values. The basics of algebra taught us how to express an unknown value using letters such as x, y, z, etc. These letters are called here as variables.
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Answer:
There are some words and phrases which imply that they need to be represented as a math operation involving addition, subtraction, multiplication and division, as well as the inclusion of algebraic terms. These words or phrases can also be used to describe a relationship between variables and constants. Hence, these phrases can be transformed into an algebraic expression. This process of writing an expression from a phrase is known as writing an algebraic expression.
Let us take a look at a few examples on writing algebraic expressions:
1. 7 more than a number x – this is a phrase that needs to be represented as an expression.
‘More than’ implies an addition operation, so,
x + 7 is the required algebraic expression for the given phrase.
2. Similarly, for the phrase, 2 times b, the word times implies a multiplication operation or we need to find the product.
So the algebraic expression for this statement is, 2 × b.