Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 8 + 12 = _____
- 7 + 10 = _____
- 11 + 38 = _____
- 59 + 20 = _____
(a)
8 + 12 = 20
(b)
7 + 10 = 17
(c)
11 + 38 = 49
(d)
59 + 20 = 79
Answer(s): 20, 17, 49, 79