Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 724 + 5 = ______
- 20 + 37 = _____
- 431 + 228 = _____
- 1970 + 617 = _____
(a)
724 + 5 = 729
(b)
20 + 37 = 57
(c)
431 + 228 = 659
(d)
1970 + 617 = 2587
Answer(s): 729, 57, 659, 2587