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Kathy Read

One and Two More, One and Two Less

TTwo-More-Than Machine

Press 0+2=

Now press any number (for example 5)

Now hold your finger over = key and predict

the number that is 2 more than your number.

Now press = to confirm

If you do not press any of the operation keys, the machine will continue to perform in this way.

Can you make a two less machine?  One more, one less

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