Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 159 - 1 = _____
- 35 - 15 = _____
- 939 - 127 = _____
- 1897 - 331 = _____
(a)
159 - 1 = 158
(b)
35 - 15 = 20
(c)
939 - 127 = 812
(d)
1897 - 331 = 1566
Answer(s): 158, 20, 812, 1566