6 + 6 = ?, 6+6, 6+6=, 6) + 6, 6)+(-6, 6.6, | 6| ... | - 6|, 6 + 6 = ..., 6 : 6 =, 6 : ............ = 6, 6 × 6 = ….., 6× 6 = ….., 6 × 6 = …, 6 : … = 6, … : 6 = 6, 6×6 = ...