Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 200 - 60 + 200 = _______
- 676 = 500 + _______ + 50
- 8778 = 8000 + _______ + 8
- 5538 = 5030 + _______
(a)
200 - 60 + 200
= 200 + 200 - 60
= 400 - 60
= 340
(b)
676 = 500 + ______ + 50
676 = 500 + 50 + ______
676 = 550 + ______
676 - 550 = 126
(c)
8778 = 8000 + ______ + 8
8778 = 8000 + 8 + ______
8778 = 8008 + ______
8778 - 8008 = 770
(d)
5538 = 5030 + ______
5538 - 5030 = 508
Answer(s): 340, 126, 770, 508