Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 500 - 50 + 600 = _______
- 765 = 500 + _______ + 20
- 4869 = 4000 + _______ + 9
- 6453 = 6050 + _______
(a)
500 - 50 + 600
= 500 + 600 - 50
= 1100 - 50
= 1050
(b)
765 = 500 + ______ + 20
765 = 500 + 20 + ______
765 = 520 + ______
765 - 520 = 245
(c)
4869 = 4000 + ______ + 9
4869 = 4000 + 9 + ______
4869 = 4009 + ______
4869 - 4009 = 860
(d)
6453 = 6050 + ______
6453 - 6050 = 403
Answer(s): 1050, 245, 860, 403