1) 8 + 9 = 2) 5 + 6 = 3) 4 + 5 = 4) 7 + 8 = 5) 6 + 7 = 6) 7 + 7 = 7) 4 + 4 = 8) 9 + 9 = 9) 6 + 6 = 10) 3 + 3 = 11) 8 + 8 = 12) 14 - 7 = 13) 8 - 4 = 14) 18 - 9 = 15) 12 - 6 = 16) 16 - 8 = 17) 10 - 5 = 18) 6 - 3 = 19) 4 - 2 = 20) 2 - 1 =

Adding/Subtracting Doubles & Doubles Plus 1

Leaderboard

Visual style

Options

Switch template

Continue editing: ?