Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 900 - 60 + 600 = _______
- 828 = 500 + _______ + 80
- 3327 = 3000 + _______ + 7
- 5484 = 5080 + _______
(a)
900 - 60 + 600
= 900 + 600 - 60
= 1500 - 60
= 1440
(b)
828 = 500 + ______ + 80
828 = 500 + 80 + ______
828 = 580 + ______
828 - 580 = 248
(c)
3327 = 3000 + ______ + 7
3327 = 3000 + 7 + ______
3327 = 3007 + ______
3327 - 3007 = 320
(d)
5484 = 5080 + ______
5484 - 5080 = 404
Answer(s): 1440, 248, 320, 404