Topics
Equations
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India
Class VIII

Properties of equality

Lesson
Practice
Lesson

Worked Examples

Question 1

Consider the true expression

$x+8=8+x$x+8=8+x

Which of the following properties does this illustrate?

  1. Associative property of addition

    A

    Commutative property of addition

    B

    Distributive property

    C

    Associativite property of multiplication

    D

Question 2

By which property are $9x=-27$9x=−27 and $\frac{9x}{9}=\frac{-27}{9}$9x9​=−279​ equivalent equations?

  1. Multiplication property of equality.

    A

    Addition property of equality.

    B

Question 3

Use the commutative property to rewrite the following expression.

  1. $g\times d$g×d$=$=$\editable{}$$\times$×$\editable{}$

Outcomes

8.A.AE.1

Multiplication and division of algebraic exp.(Coefficient should be integers)

8.A.AE.2

Some common errors (e.g. 2 + x ≠ 2x, 7x + y ≠ 7xy )

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