Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 5 + 15 = _____
- 2 + 19 = _____
- 21 + 32 = _____
- 64 + 22 = _____
(a)
5 + 15 = 20
(b)
2 + 19 = 21
(c)
21 + 32 = 53
(d)
64 + 22 = 86
Answer(s): 20, 21, 53, 86