MORE ADDING & SUBTRACTING FUN

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ezMATHTM Adding and Subtracting Number 7 -

Adding numbers from the Outer and Inner Rings gives the Sum or answer in the Middle Ring - in the same column.

Subtracting a number on the Outer Ring from the Middle Ring will give the Difference on the Inner Ring.

On the other hand, subtracting a number on the Inner Ring from the Middle Ring will give the Difference on the Outer Ring.

Ex: 7 + 2 = 9; 9 - 2 = 7, and 9 - 7 = 2