Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 5 + 12 = _____
- 7 + 21 = _____
- 30 + 34 = _____
- 57 + 22 = _____
(a)
5 + 12 = 17
(b)
7 + 21 = 28
(c)
30 + 34 = 64
(d)
57 + 22 = 79
Answer(s): 17, 28, 64, 79