Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- - 2 - 9 = _______
- - 9 + 2 = _______
- - 2 + 9 = _______
- - 9 - 2 = _______
(a)
- 2 - 9 = - 11
(b)
- 9 + 2 = 2 - 9 = - 7
(c)
- 2 + 9 = 9 - 2 = 7
(d)
- 9 - 2 = - 11
Answer(s): - 11, - 7, 7, - 11