Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 200 - 40 + 200 = _______
- 842 = 500 + _______ + 30
- 9323 = 9000 + _______ + 3
- 8266 = 8060 + _______
(a)
200 - 40 + 200
= 200 + 200 - 40
= 400 - 40
= 360
(b)
842 = 500 + ______ + 30
842 = 500 + 30 + ______
842 = 530 + ______
842 - 530 = 312
(c)
9323 = 9000 + ______ + 3
9323 = 9000 + 3 + ______
9323 = 9003 + ______
9323 - 9003 = 320
(d)
8266 = 8060 + ______
8266 - 8060 = 206
Answer(s): 360, 312, 320, 206