Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 624 + 4 = ______
- 21 + 34 = _____
- 235 + 223 = _____
- 3872 + 812 = _____
(a)
624 + 4 = 628
(b)
21 + 34 = 55
(c)
235 + 223 = 458
(d)
3872 + 812 = 4684
Answer(s): 628, 55, 458, 4684