Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 9 + 10 = _____
- 5 + 21 = _____
- 33 + 39 = _____
- 60 + 29 = _____
(a)
9 + 10 = 19
(b)
5 + 21 = 26
(c)
33 + 39 = 72
(d)
60 + 29 = 89
Answer(s): 19, 26, 72, 89