4E Roots

• Wiskunde
• Middelbare school
• vwo
• Leerjaar 1

Good morning!

Schedule: 

• Learning goals
• What did we do last time
• Roots
• Worksheets

Learning goals 

At the end of this lessons I can:

• Explain what a root is 
• Find the roots of perfect square and cubic numbers
• Use the correct order of operations including roots

What did we do last time?

Name a square number
(NOT in index form)

4E Roots 

16 is a squared number

16 = 42

The square root uses the opposite operation

√​16​​​=

Find the squared numer that is equal to the number under the square root

4E: Roots

Can we do the same thing with cubic numbers? 

What would this be called?

What would this look like (notation)?  

See if you can find the answers to these questions, use your book or the internet!!

4E: Roots 

Simplify: 

√​49​​​=

√​8​​​=

3

√​1​​​=

5

√​−36​​​=

4E: Roots

You can not take the Square root of a negative number 

(-6)² = -6 ⋅ -6 = 

6² = 6 ⋅ 6 = 

√​−36​​​

Order of operations

B  rackets

E xponents

D ivision

M ultiplication

A ddition

S ubtraction

{

{

From left to right!

From left to right!

Where do Roots go in the order of operations? 

4E: Roots 

The area of the garden is 25 m2

What is the length of each side? 

?

Remember: 

Area = length ⋅ width 

Worksheet

I have 3 different worksheets. 

Worksheet 1          worksheet 2         Worksheet 3

"This is my first time seeing roots"

"I can do simple sums with roots "

"I want to really challenge myself"