Thursday, 4 June 2015

Reversibility

Reversibility is when you have a minus and make it into a plus instead like this example here. e.g. 73-57 you will make it like this:57+____=73. Now you know how to do reversibility you can do it to make it easier. 

1 comment:

  1. Wow Michael I like how you have shown us an example
    Great work

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