12 - 6 + 6  =, 14 - 7+ 7 =, 16 - 8 + 8 = , 18 - 9 + 9 =, 13 - 6 + 7 =  Double ( 6 + 6 ) +1, 15 - 7 + 8 = Double (7 + 7 ) +1, 17 - 8 + 9 = Double ( 8 + 8 ) +1 ,

Doubles and Doubles Plus 1 - 7+7=14, 8 + 8 = 16, 9 + 9 = 18

Edetabel

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