Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 700 + 90 + _____ = 793
- 5000 + _____ + 70 = 5870
- _____ + 80 + 2 = 9082
- 70000 + _____ + 2 = 77402
(a)
700 + 90 + _____ = 793
790 + _____ = 793
793 - 790 = 3
(b)
5000 + _____ + 70 = 5870
5070+ _____ = 5870
5870 - 5070 = 800
(c)
_____ + 80 + 2 = 9082
_____ + 82 = 9082
9082 - 82 = 9000
(d)
70000 + _____ + 2 = 77402
70002 + _____ = 77402
77402 - 70002 = 7400
Answer(s): 3, 800, 9000, 7400