Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 30 - 10 = _____
- 44 - 10 = _____
- 64 - 10 = _____
- 91 - 10 = _____
(a)
30 - 10 = 20
(b)
44 - 10 = 34
(c)
64 - 10 = 54
(d)
91 - 10 = 81
Answer(s): 20, 34, 54, 81