4 - 3 +  =7, 1 - 11 +  = 12, 7 - 11 +  = 18, 3 - 12 +  = 15, 5 - 5 +  =10, 2 - 7 +  =9, 10 - 10 +  =20, 8 - 10 +  =18, 9 - 1 +  =10, 6 - 10 +  =16,

Maths addtion 6 years

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