| 6 - 3 = ______ 3 - 1 = ______ 7 - 7 = ______ 4 + 1 = ______ 7 - 6 = ______ 9 + 7 = ______ 8 - 1 = ______ 9 - 2 = ______ 3 - 2 = ______ 10 - 6 = ______ | 3 + 3 = _______ 4 + 3 = _______ 2 + 1 = _______ 3 + 1 = _______ 1 - 1 = _______ 6 - 1 = _______ 4 + 2 = _______ 7 - 2 = _______ 10 - 10 = _______ 2 - 1 = _______ |