Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 309 - 6 = _____
- 39 - 13 = _____
- 936 - 423 = _____
- 6699 - 137 = _____
(a)
309 - 6 = 303
(b)
39 - 13 = 26
(c)
936 - 423 = 513
(d)
6699 - 137 = 6562
Answer(s): 303, 26, 513, 6562