Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 200 - 40 + 900 = _______
- 603 = 500 + _______ + 70
- 5498 = 5000 + _______ + 8
- 4496 = 4090 + _______
(a)
200 - 40 + 900
= 200 + 900 - 40
= 1100 - 40
= 1060
(b)
603 = 500 + ______ + 70
603 = 500 + 70 + ______
603 = 570 + ______
603 - 570 = 33
(c)
5498 = 5000 + ______ + 8
5498 = 5000 + 8 + ______
5498 = 5008 + ______
5498 - 5008 = 490
(d)
4496 = 4090 + ______
4496 - 4090 = 406
Answer(s): 1060, 33, 490, 406