Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 900 - 70 + 600 = _______
- 856 = 500 + _______ + 30
- 8476 = 8000 + _______ + 6
- 4475 = 4070 + _______
(a)
900 - 70 + 600
= 900 + 600 - 70
= 1500 - 70
= 1430
(b)
856 = 500 + ______ + 30
856 = 500 + 30 + ______
856 = 530 + ______
856 - 530 = 326
(c)
8476 = 8000 + ______ + 6
8476 = 8000 + 6 + ______
8476 = 8006 + ______
8476 - 8006 = 470
(d)
4475 = 4070 + ______
4475 - 4070 = 405
Answer(s): 1430, 326, 470, 405