Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 4 + 10 = _____
- 3 + 20 = _____
- 21 + 58 = _____
- 69 + 15 = _____
(a)
4 + 10 = 14
(b)
3 + 20 = 23
(c)
21 + 58 = 79
(d)
69 + 15 = 84
Answer(s): 14, 23, 79, 84