Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- - 3 - 9 = _______
- - 9 + 3 = _______
- - 3 + 9 = _______
- - 9 - 3 = _______
(a)
- 3 - 9 = - 12
(b)
- 9 + 3 = 3 - 9 = - 6
(c)
- 3 + 9 = 9 - 3 = 6
(d)
- 9 - 3 = - 12
Answer(s): - 12, - 6, 6, - 12