Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 800 - 20 + 300 = _______
- 694 = 500 + _______ + 60
- 6699 = 6000 + _______ + 9
- 8965 = 8060 + _______
(a)
800 - 20 + 300
= 800 + 300 - 20
= 1100 - 20
= 1080
(b)
694 = 500 + ______ + 60
694 = 500 + 60 + ______
694 = 560 + ______
694 - 560 = 134
(c)
6699 = 6000 + ______ + 9
6699 = 6000 + 9 + ______
6699 = 6009 + ______
6699 - 6009 = 690
(d)
8965 = 8060 + ______
8965 - 8060 = 905
Answer(s): 1080, 134, 690, 905