Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 228 + 1 = ______
- 20 + 39 = _____
- 231 + 123 = _____
- 2271 + 415 = _____
(a)
228 + 1 = 229
(b)
20 + 39 = 59
(c)
231 + 123 = 354
(d)
2271 + 415 = 2686
Answer(s): 229, 59, 354, 2686