Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 90 - 9 = _____
- 600 - 17 = _____
- 40 - 20 = _____
- 300 - 13 = _____
(a)
90 - 9 = 81
(b)
600 - 17 = 583
(c)
40 - 20 = 20
(d)
300 - 13 = 287
Answer(s): 81, 583, 20, 287