Year 8 Mathematics - Algebraic Operations

Algebraic Operations

Chapter 4

A: Algebraic notations

B: The language of mathematics

C: Collecting like terms

Multiple Choice

Simplify the expression using product notation:

 $3a\times4b$ 

•  $7ab$  

•  $12ba$  

•  $12a\times b$  

•  $12ab$  
  

Multiple Choice

Simplify:

 $3\times\left(a+b\right)$  

•  $3a\ +\ b$  

•  $3a+3b$  
  

•  $3ab$  
  

•  $3\times a+3\times b$  

Multiple Choice

Write in simplest form the following expression:

 $2\times a\times b\times c\times4\times c\times c$  

•  $6abc^3$  

•  $8abc^2$  

•  $2acb\times4c^2$  

•  $8abc^3$  

Multiple Choice

What is the coefficient of $c$  in the following expression ?

 $2c^2-c+4$  

• 2

• 1

• -1

• 4

Multiple Choice

How many constant terms are there in the following equation ?

 $3+4ab-\pi=4a-5$  

• 2

• 4

• 3

• 5

 $ab+3a^2b-2ab-a^2$  

1. Is this an expression or equation ?
2. What is the coefficient of  $a^2$  ?
3. How many terms are there ?
4. Are there any like terms ?

Challenging questions ahead...

Multiple Choice

What is the coefficient of  $b$   in the following expression after collecting like terms ?

 $4a\ +3b-c-b$  

•  $3$  

•  $2$  

•  $-1$  

•  $3\ and\ -1$  

Multiple Choice

How many like terms are there after simplifying the following equation using index notations:

 $3ab+4b^2-ab=2b\times\left(a+b\right)-6$ 

•  $2$  

•  $3$  

•  $6$  

•  $5$  

Well done everyone!

Chapter 4

Exercise 4A ........................