10+8= - 18, 2+3= - 5, 2+6= - 8, 4+2= - 6, 5+5= - 10, 10+1= - 11, 10+5= - 15, 10+4= - 14, 5+4= - 9, 10+2= - 12,

Addition Match Up with Some Teens

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