Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 21 - 10 = _____
- 42 - 10 = _____
- 60 - 10 = _____
- 84 - 10 = _____
(a)
21 - 10 = 11
(b)
42 - 10 = 32
(c)
60 - 10 = 50
(d)
84 - 10 = 74
Answer(s): 11, 32, 50, 74