7th Maths : Term 1 Unit 3 : Algebra : Summary

**Summary**

● A symbol having a fixed numerical value is called
a constant, and a symbol which takes various numerical values is called a variable.

● Variables and constants are combined by the operations
addition and subtraction to construct an algebraic expression.

● Any mathematical formula, rule or pattern can
be generalized using an algebraic expression.

● The parts of an algebraic expression which are
combined by the signs ‘+’ or '−' are called the terms of the expressions.

● In a term of an algebraic expression, each factor
or group of factors is called the co-efficient of the remaining factors. The number
in the variable term is called the numerical co-efficient.

● The terms having the same algebraic factors are
called like terms. Terms with different
algebraic factors are called unlike terms.

● We can add or subtract like terms only. Unlike
terms cannot be added or subtracted.

● An equation can be looked as algebraic expression
equated either to a constant or to
any other algebraic expression.

● To solve an equation, we can add or subtract or
multiply or divide the same number on both sides of the equation.

** **

__ICT Corner__

**Expected Result is shown in this picture**

**Step – 1 :**

Open the Browser type the URL Link given
below (or) Scan the QR Code. GeoGebra work sheet named “7th std Algebra” will open.
Click on “NEW PROBLEMS” to get new questions.

**Step - 2 :**

Enter the correct number in the input box and enter. If the answer is correct It will show “ Great Job”. Practice more and more problems.

**Browse in the link**

Algebra:
https://ggbm.at/tbxusqg7

or Scan the
QR Code.

Tags : Algebra | Term 1 Chapter 3 | 7th Maths , 7th Maths : Term 1 Unit 3 : Algebra

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