Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 9 + 40 = _____
- 31 + 20 = _____
- 22 + 47 = _____
- 52 + 43 = _____
(a)
9 + 40 = 49
(b)
31 + 20 = 51
(c)
22 + 47 = 69
(d)
52 + 43 = 95
Answer(s): 49, 51, 69, 95