Lattice Multiplication 7.0 - App Store

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About Lattice Multiplication

Lattice Multiplication helps students learn and practice the lattice multiplication method step by step. The app shows each part of the lattice multiplication process visually. Students first complete the multiplication...

Lattice Multiplication helps students learn and practice the lattice multiplication method step by step. The app shows each part of the lattice multiplication process visually. Students first complete the multiplication steps and then add along the diagonals. Animated numbers move into the correct places, helping students understand how the method works. Lattice multiplication is a compact visual method for multiplying larger numbers. It is algorithmically equivalent to long multiplication and is also excellent times tables practice. Students can solve randomly generated problems or enter their own multiplication problems. Wired.com: “This was one form of multiplication that I’d never done before, but the app taught me very clearly. It makes multiplying large numbers easier, and allows you to see it all visually.” Teacher endorsement: “The math apps by Esa Helttula allow students to practice and reinforce the specific computation strategies taught in class, with as much or as little scaffolding as necessary. They also provide individualized feedback to each student, with an immediacy that is not always possible through pencil and paper practice.” - Rita Zeni, Ecole Sandy Hill Elementary, Abbotsford, BC, Canada Features: - Step-by-step lattice multiplication practice - Multiplicand can have up to 5 digits - Multiplier can have up to 3 digits - Randomly generated or manually entered problems - Current operation for each step can be hidden - Operands for the current operation can be highlighted - Three visual themes: black, gray, and gold - Adjustable animation speed - Different interfaces for iPhone and iPad The Lattice Multiplication Method Lattice multiplication is algorithmically equivalent to long multiplication. A lattice (a grid) guides the calculation. All the multiplications are done first and then the additions. The method was introduced to Europe in 1202 in Fibonacci's Liber Abaci. In this groundbreaking book Fibonacci presented many algorithms for working with Arabic numerals. Ancient Indians and Chinese originally invented some of the algorithms. Fibonacci presented both the current standard long multiplication and also an originally Indian method called lattice multiplication, which is faster and more compact for working with larger numbers. Other iDevBooks Math Apps: Other iDevBooks math apps include Column Addition, Long Multiplication, Long Division, Column Subtraction, Visual Multiplication Table, Fraction Math, Partial Differences Subtraction, Partial Quotients Division, Partial Sums Addition, Decimal Rounding, and more. Feedback: New ideas to make this app better are welcome. Please visit idevbooks.com to give feedback. Privacy: This app has no ads, no in-app purchases, and does not transmit user data during operation. The app also does not contain links to other apps or to the web.

Version History Updated for iOS 26 compatibility. 7.0 Sep 9 - support for iOS 15 6.5 10/14/2021 - support for iOS 13 - new interface with support for latest iPad and iPhone models - new theme colors 6.0 09/30/2019 - support for iOS 12 - support for iPhone Xr and Xs Max - minor bug fixes 5.2 11/13/2018 - support for iOS 11 - support for iPhone X 5.1 03/27/2018 - 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. 5.0 02/15/2017 - support for iOS 9.3 Please visit iDevBooks.com if you have any feedback or you want information about 26 iDevBooks math apps. 4.0 04/09/2016 - minor interface changes - new icon 3.0 09/12/2014 Interface updates for iOS 7. If you have any feedback please visit idevbooks.com. There are now 25 iDevBooks math apps. 2.4 10/04/2013 -The web link to support pages has been removed to prevent users from accidentally launching the browser. -There are also some minor interface changes. If you have any feedback please visit idevbooks.com. There are now 24 iDevBooks math apps. 2.3 05/30/2013 Sometimes the keyboard was not visible on an iPad with iOS 6. In version 2.1: Support for iPhone 5 and iOS 6. 2.2 10/05/2012 Support for iPhone 5 and iOS 6. 2.1 09/26/2012 - The app is now universal and it has custom interfaces for iPhone and iPad - On the iPad the app can be used in portrait or landscape orientation - Some minor bugs on iPhone / iPod Touch have been fixed - Please give feedback and get information about 18 other math apps by visiting http://idevbooks.com 2.0 12/06/2011 In some cases the numbers inside the grid became dim after inputting custom problems. New in previous version 1.1: The user can input custom problems. If you would like to provide feedback about this or any other of the 17 idevbooks math apps, please visit http://idevbooks.com 1.2 05/31/2011 The user can now input custom problems. If you would like to provide feedback about this or any other of the 17 idevbooks math apps, please visit http://idevbooks.com 1.1 04/28/2011 1.0 02/23/2010

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Previous Versions

Here you can find the changelog of Lattice Multiplication since it was posted on our website on 2016-10-02 17:20:47. The latest version is 7.0 and it was updated on 2026-10-17 18:11:09. See below the changes in each version.

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