Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 424 + 1 = ______
- 21 + 31 = _____
- 536 + 422 = _____
- 3870 + 718 = _____
(a)
424 + 1 = 425
(b)
21 + 31 = 52
(c)
536 + 422 = 958
(d)
3870 + 718 = 4588
Answer(s): 425, 52, 958, 4588