NICOLECYRAHTANGO NICOLECYRAHTANGO Math Answered Fill in each blank and name the property used. 1. 18 + blank = 6 + 18 blank 2. -40 + blank = 0 blank 3. 15* blank = 0 blank 4. (2 x 1) x blank = 2 x (1 x 6) blank 5. 3 (7 + 10) = blank + 30