Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- - 6 - 7 = _______
- - 7 + 6 = _______
- - 6 + 7 = _______
- - 7 - 6 = _______
(a)
- 6 - 7 = - 13
(b)
- 7 + 6 = 6 - 7 = - 1
(c)
- 6 + 7 = 7 - 6 = 1
(d)
- 7 - 6 = - 13
Answer(s): - 13, - 1, 1, - 13