Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 521 + 1 = ______
- 21 + 36 = _____
- 438 + 321 = _____
- 1371 + 518 = _____
(a)
521 + 1 = 522
(b)
21 + 36 = 57
(c)
438 + 321 = 759
(d)
1371 + 518 = 1889
Answer(s): 522, 57, 759, 1889