Matching Pairs Doubles +1Online version Match the doubles +1 fact with the corresponding representation by Cheryl Teolis 1 7 + 8 = 2 5 + 6 = 3 8 + 9 = 4 3 + 4 5 2 + 3 = 6 1 + 2 = 7 4 + 5 = 8 9 + 10 = 9 6 + 7 =