Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- - 4 - 9 = _______
- - 9 + 4 = _______
- - 4 + 9 = _______
- - 9 - 4 = _______
(a)
- 4 - 9 = - 13
(b)
- 9 + 4 = 4 - 9 = - 5
(c)
- 4 + 9 = 9 - 4 = 5
(d)
- 9 - 4 = - 13
Answer(s): - 13, - 5, 5, - 13