Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 21 - 10 = _____
- 49 - 10 = _____
- 70 - 10 = _____
- 73 - 10 = _____
(a)
21 - 10 = 11
(b)
49 - 10 = 39
(c)
70 - 10 = 60
(d)
73 - 10 = 63
Answer(s): 11, 39, 60, 63