Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 23 - 10 = _____
- 47 - 10 = _____
- 69 - 10 = _____
- 77 - 10 = _____
(a)
23 - 10 = 13
(b)
47 - 10 = 37
(c)
69 - 10 = 59
(d)
77 - 10 = 67
Answer(s): 13, 37, 59, 67