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Opposite-Change Addition

Opposite-Change Addition
  • #: 158016
  • Price: $3.99 In Apple Store
  • Category: Education
  • Updated: 2017-02-15
  • Current Version: 5.0
  • 5.0
  • Size: 0.40 MB
  • Language: English
  • Seller: Esa Helttula
  • Requirements: Compatible with iPhone, iPod touch, and iPad. Requires iOS 3.0 or later
  • © Esa Helttula
  •  Add to Favorite apps

 

Description

In the Opposite-Change Addition app the user can keep adding a number to one addend and subtract the same number from the other addend until the addition problem can be solved easily.

The opposite-change rules states that if you subtract a number from one addend and add the same number to the other addend, the sum remains the same. An addition problem 267 + 289 is easier to solve when it has been changed into 256 + 300.

Features:

- The numbers can have up to 3 digits

- You can set your own problems

- Three different themes

- Native interfaces for iPhone, and iPad

- Open worksheets of up to 10 problems that are made on the iDevBooks.com site

Other iDevBooks math apps

iDevBooks math apps have been reviewed and endorsed by Wired.com, Common Sense Media, and other respected sites and organizations.

Some of the over 30 other iDevBooks math apps are Visual Multiplication Table, Decimal Rounding, Whole Number Rounding, Column Subtraction, Column Addition, Long Division, Long Multiplication, Lattice Multiplication, Fraction Math, Partial Differences Subtraction, Partial Quotients Division, Partial Sums Addition, etc.

Feedback and requests for new features

New ideas to make this app better are welcome. Please visit idevbooks.com to give feedback.

Privacy

This app has no ads or in-app purchases and it does not transmit any data during the operation of the app. This app also does not contain any links to other apps or the web.

What's New in Version 5.0

- open worksheets from app (new worksheets can be made on the iDevBooks.com site)
- support for iOS 10.0
- support for shared iPad in school environments

For more information about worksheets and other new features of this version please visit idevbooks.com. Please also get in contact if you have any feedback or you want information about 32 iDevBooks math apps.

View iPhone screenshots | View iPad screenshots

iPhone Screenshots

Opposite-Change Addition iPhone Screenshot 1
Opposite-Change Addition iPhone Screenshot 2
Opposite-Change Addition iPhone Screenshot 3
Opposite-Change Addition iPhone Screenshot 4
Opposite-Change Addition iPhone Screenshot 5

iPad Screenshots

Opposite-Change Addition iPad Screenshot 1
Opposite-Change Addition iPad Screenshot 2
Opposite-Change Addition iPad Screenshot 3
Opposite-Change Addition iPad Screenshot 4
Opposite-Change Addition iPad Screenshot 5

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The information may be outdated (2017-03-08 07:47:54). For actual information go to iTunes

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