Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 500 - 80 + 700 = _______
- 682 = 500 + _______ + 60
- 3438 = 3000 + _______ + 8
- 4267 = 4060 + _______
(a)
500 - 80 + 700
= 500 + 700 - 80
= 1200 - 80
= 1120
(b)
682 = 500 + ______ + 60
682 = 500 + 60 + ______
682 = 560 + ______
682 - 560 = 122
(c)
3438 = 3000 + ______ + 8
3438 = 3000 + 8 + ______
3438 = 3008 + ______
3438 - 3008 = 430
(d)
4267 = 4060 + ______
4267 - 4060 = 207
Answer(s): 1120, 122, 430, 207