Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 155 - 1 = _____
- 32 - 12 = _____
- 531 - 220 = _____
- 1492 - 732 = _____
(a)
155 - 1 = 154
(b)
32 - 12 = 20
(c)
531 - 220 = 311
(d)
1492 - 732 = 760
Answer(s): 154, 20, 311, 760