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How to use a 100 bead abacus-Double Digit Multiplication

7,449 views October 30, 2016 30:16

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ChannelJames Porter

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How to use a 100 bead abacus to do double digit multiplication.

About this tutorial

James Porter published this 30:16 video tutorial on October 30, 2016. It has been watched 7,449 times on YouTube.

Duration
30:16
Published
October 30, 2016
Views
7,449
Likes
66

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