The traditional way of learning the table by heart is discarded.
In this application it is only required to add: 6+6, 6+6+6, 7+7, 7+7+7, 8+8 and 8+8+8.
In this application it is only required to add: 6+6, 6+6+6, 7+7, 7+7+7, 8+8 and 8+8+8.
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