Slides containing multiplication and division of powers

1. Lesson Objectives
By the end of this lesson you should be able to:
 Multiply powers with the same base.
 Divide powers with the same base.

2. Multiplying powers of the same number
Copy the text below in to your books and then answer the questions
When multiplying:
Powers of the same base
(number) are added.
In general: am
x an
= am+n
a) 25
x 22
=
b) 43
x 46
=
c) 62
x 6 =
d) 84
x 83
=
e) 92
x 9 -2
=
f) 2-3
x 2 =
g) 55
x 5 –7
=
h) 3-2
x 3 =
i) 8-2
x 8 -3
=
Give your
answer in
power form
Example:
55
x 56
= 511
Base number
Power

3. Multiplying powers of the same number
Answers
When multiplying:
Powers of the same base
(number) are added.
In general: am
x an
= am+n
a) 25
x 22
=
b) 43
x 46
=
c) 62
x 6 =
d) 84
x 83
=
e) 92
x 9 –2
=
f) 2-3
x 2 =
g) 55
x 5 –7
=
h) 3 -2
x 3 =
i) 8 -2
x 8 -3
=
27
49
63
87
90
=
2-2
=
5-2
=
3-1
=
8 1
=
Base number
Power
Follow me card activity

4. Dividing powers of the same number
Copy the text below in to your books and then answer the questions
When dividing:
Powers of the same base
(number) are subtracted.
In general: am
÷ an
= am - n
a) 25
÷ 22
=
b) 47
÷ 45
=
c) 62
÷ 6 =
d) 84
÷ 83
=
e) 311
÷ 35
=
f) 2-3
÷ 2 =
g) 55
÷ 5 –7
=
h) 11-2
÷ 113
=
i) 7-4
÷ 7-3
=
Give your
answer in
power form
Example:
56
÷ 52
= 54
Base number
Power

5. When dividing:
Powers of the same base
(number) are subtracted.
In general: am
÷ an
= am - n
a) 25
÷ 22
=
b) 47
÷ 45
=
c) 62
÷ 6 =
d) 84
÷ 83
=
e) 311
÷ 35
=
f) 2-3
÷ 2 =
g) 55
÷ 5 –7
=
h) 11-2
÷ 113
=
i) 7-4
÷ 7-3
=
Dividing powers of the same number
Answers
23
42
61
=
81
=
36
2-4
512
11-5
7-1
=
Base number
Power
Now try these:
2 x 25
21
35
x 3-2
32
5-3
x 54
5-2
42
x 46
4-7
Extra Questions

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7. This powerpoint was kindly donated to
www.worldofteaching.com
http://www.worldofteaching.com is home to over a
thousand powerpoints submitted by teachers. This is a
completely free site and requires no registration. Please
visit and I hope it will help in your teaching.