POWERS OF TEN

Educational math program to learn to calculate with powers of ten

Powers of ten is an item of algebra that causes sometimes problems for the math students of
high schools. Therefore we have developed the educational program "Powers of Ten".
With this educational software you will learn to write powers of ten as decimal numbers,
how to multiply and divide powers of ten, how to multiply with the square root and how
to raise a power to a power to ten. There are seven different exercises.
It is also possible to play for a High Score, which will surely increase the motivation!

The program is Ms-dos based, and will already work on rather "old" computers,
but also in Windows 3.x and in the newest computers with Windows 95/98+, XP etc.
It is suitable for high schools or elementary schools, for students aged between about 11
and 17 years, but could of course also be used at home.

Order Powers of Ten --------------------Download demo Powers of ten

Price: 14 $
Site license!
Paying: all mayor credit cards or PayPal
Delivery: Download link emailed. You'll receive the file: "PWsetup.exe" (206 KB).
By executing it you will install the program in an easy way in Msdos or in your Windows menu.
The software will work on almost every PC! (286, Msdos, Windows 3.1, 9x, XP etc.)

In our main website http://www.valgetal.com you can download more educational
software and math games

Download more educational games: play and improve your maths!----

Screenshots:

-First page of the educational program Powers of Ten------------

Main menu of Powers of Ten-----

You can always study the theory of powers of ten in the program---

Also is it possible to practise the theory of powers of ten

In seven exercises you can practise with powers of ten

Exercise 2 of Powers of Ten, in which you have to write them as decimal numbers

Exercise 3 of Powers of Ten; in the demo this exercise is fully working

Download more educational games: play and improve your maths!

Powers of Ten tells you always when you commit an error

Exercise 6 of Powers of Ten, in which you have to divide them

To stimulate the motivation you can play for a high score in Powers of Ten

After finishing the program tells you how many points you have gained

The list of best players of Powers of Ten

Download more educational games: play and improve your maths!

-© Joustra Software, Play and Learn!

Theory:

What are powers of ten?

With powers of ten you can write in an easy way large and small numbers:

For example

10n means 10x10x10x .... 10 (n factors) and

10-n means 1/(10x10x10x...10) (n factors)

The base is here 10; the exponents are n y -n .

For example:

10 = 10x10x10 = 1000

10 = 10x10 = 100

10-1 = 0.1

10-3 = 0.001

By agreement 100 = 1

It is also handy to know that, for example, 105 is an 1 followed by 5 zeros,

and that 10-5 is an 1 with 5 zeros ahead: 10 = 0.00001

How much is a number multiplied by a power of ten?

For example:

3x101 = 3 x 10 = 30

4.8x105 = 4,8 x 100000 = 480000

3x10-1 = 3 x 1/10 = 3 x 0.1 = 0.3

4.8x10-3 = 4.8 x 1/1000 = 0.0048

How do you multiply powers of ten?

You multiply them by adding their exponents.

For example:

103 x 102 = 103+2 = 105 ( = 1000 x 100 = 100000 = 105 )

103 x 10-2 = 103-2 = 101 ( = 1000 x 0.01 = 101)

How do you divide powers of ten?

You divide powers of ten by subtracting their exponents.

For example:

105 /103 = 10 5-3 = 10 2 = 100

How do you multiply with the square root of ten?

First it is handy to write:

V10 = 100.5 (V=square root). Then you add the exponents.

V10 x 10 = 100.5 x 101 = 100.5+1 = 101.5

How do you raise a power to a power of ten?

You multiply the exponents.

For example:

( 10 3 ) 2 = 103x2 = 106 = 1000 x 1000 = 1000000

-----------------------------------------------------------------------------