Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 600 - 30 + 300 = _______
- 629 = 500 + _______ + 80
- 5443 = 5000 + _______ + 3
- 8866 = 8060 + _______
(a)
600 - 30 + 300
= 600 + 300 - 30
= 900 - 30
= 870
(b)
629 = 500 + ______ + 80
629 = 500 + 80 + ______
629 = 580 + ______
629 - 580 = 49
(c)
5443 = 5000 + ______ + 3
5443 = 5000 + 3 + ______
5443 = 5003 + ______
5443 - 5003 = 440
(d)
8866 = 8060 + ______
8866 - 8060 = 806
Answer(s): 870, 49, 440, 806