Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 8 + 12 = _____
- 9 + 36 = _____
- 27 + 42 = _____
- 67 + 15 = _____
(a)
8 + 12 = 20
(b)
9 + 36 = 45
(c)
27 + 42 = 69
(d)
67 + 15 = 82
Answer(s): 20, 45, 69, 82