3Thavo §9.2 Calculating with exponents

• Wiskunde
• Middelbare school
• havo
• Leerjaar 3

Ch 9 Calculating with variables

We've just started with this chapter,

having §9.1 Calculating with fractions behind us.

So now it's the turn to 

+ §9.2  and

+ §9.3,     that's the content for today's lesson!   

§9.2 Calculating with exponents.

In this paragraph you'll learn a few rules for dealing with exponents!

It's possible to .....

as follows:

You see the final answer in the next slide!

 working out:

finally:

Think about the

final answer!

Below you see that you may add the exponents!

It is possible to write ......

How?

See next slide!

Below you see why you may subtract the exponents,

to get the final exponent!

Similarly it is possible to write ....

Below you see that you may do:

4 x 5 = 20, to find the new exponent!

Below you see the 3 rules summarised,

now only with letters, not numbers:

Task 1:

key in your answer in the next slide:

A.                           B. 

C.                           D. 

 Now it's your turn! 

2​48​​

2​12​​

8​12​​

6​12​​

x x =
A. B.
C. D.

2​4​​

2​6​​

2​2​​

2​48​​

2​12​​

6​12​​

8​12​​

1. 2^48
2. 2^12
3. 6^12
4. 8^12

Task 2:

Key in your answer in the next slide:

A.                     B.  

C.                       D.  

So make sure to remember your choice, because you cannot read them in the next slide!

3​13​​

3​90​​

9​13​​

3​21​​

Task 2. The answer is: .............

1. 9^13
2. 3^13
3. 3^90
4. 3^21

Solution:

Task 3: Key in your answer in the next slide:

  

A.  5          B. 

C.               D.

5​4​​

5​5​​

​5​​1​​

Task 3: The answer is:

1. 5
2. 5^5
3. 5^4
4. 1/5

Solution task 3:

Homework time;

in 10-15 minutes LessonUp on §9.3 starts!

Now do:

+ §9.2  Calculating with exponents

       skipping  18   up  to  21.

+  Check your work and

+ hand in slides of your work in GoogleClassroom.