5 - 3 |
Tables of adding |
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Tables of subtract |
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Instructions: Press one of the buttons on the right column The correct number is put in red ..
In the combined operations, you must do the first operation with the first two numbers. Then, you must do the second operation with the result and the third number.
®Arturo Ramo García.-Record of intellectual property of Teruel (Spain) No 141, of 29-IX-1999 Plaza Playa de Aro, 3, 1º DO 44002-TERUEL