Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 10 + 3 = _____
- 20 + 7 = _____
- 10 + 18 = _____
- 30 + 34 = _____
(a)
10 + 3 = 13
(b)
20 + 7 = 27
(c)
10 + 18 = 28
(d)
30 + 34 = 64
Answer(s): 13, 27, 28, 64