## Dorsett Atari Mathematics (Decimals and Percents) MP ; Copyright (C) 1983 Dorsett Educational Systems, Inc.#

### Source from archive.org#

This is an archive of the "Mathematics (Percents and Decimals)" educational program published by Dorsett Educational Systems, Inc. in 1983. This was originally packaged as a set of 8 cassette tapes for use with Atari 400 and 800 computers and the Educational System Master Cartridge.

The "raw recordings" directory contains the unaltered recordings from cassette, one file per tape, with both sides of each tape in the same file. You probably don't want to use this folder.

The main files (mp1 through mp16) are likely the versions you want to use with your Atari or emulator. These have been split into 16 files (one per tape side). The audio levels have had their volume normalized, as well as any pops and clicks removed, and subsequently repaired on the data tracks. Each tape has been verified to work on the Altirra emulator.

Finally, photos of the cassette tapes are included.

The work of digitization and audio cleanup was done by Kay Savetz and Thomas Cherryhomes in May/June 2015.

Album: Mathematics (Percentages and Fractions)

Year: 1983

Original Format: Atari Educational System (Dorsett Talk & Teach)

Digital Format: Microsoft WAV, 2 channel, 16-bit 44100Hz sample rate

Digitized by: Kay Savetz/Thomas Cherryhomes

Tracks:

mp1 Decimals and Fractional Equivalents

mp2 Place Values of Decimal Point

mp3 Additions & Subtraction of Decimals

mp4 Multiplication of Decimals

mp5 Changing Fractions to Decimals

mp6 Rounding Decimals, Dollrs, and Cents

mp7 Changing Percent to Decimal Fractions

mp8 Part percent, total in percent

mp9 Solving for a Missing Percent Value

mp10 Reciprocals in Simple Equations

mp11 Percent of one Number to Another

mp12 Interest on Money, Part 1, The Principal

mp13 Part 2, Interest FOrmula, Installment

mp14 Part 3, discounted installment--interest

mp15 Part 4, Comparing Interest

mp16 Part 5, Simple Interest on Savings

Tracks (size in sum: 1.02 GB):

### Images#

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### List of attachments

Kind | Attachment Name | Size | Version | Date Modified | Author | Change note |
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mpA_.jpg | 444.6 kB | 1 | 05-Aug-2015 00:23 | Roland B. Wassenberg | |

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mpB_.jpg | 448.9 kB | 1 | 05-Aug-2015 00:23 | Roland B. Wassenberg | |

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mrA_.jpg | 425.1 kB | 1 | 04-Aug-2015 22:48 | Roland B. Wassenberg | |

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mrB_.jpg | 414.5 kB | 1 | 04-Aug-2015 22:48 | Roland B. Wassenberg |