Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 27 - 10 = _____
- 33 - 10 = _____
- 57 - 10 = _____
- 78 - 10 = _____
(a)
27 - 10 = 17
(b)
33 - 10 = 23
(c)
57 - 10 = 47
(d)
78 - 10 = 68
Answer(s): 17, 23, 47, 68