Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 700 + 50 + _____ = 755
- 9000 + _____ + 60 = 9460
- _____ + 70 + 6 = 6076
- 30000 + _____ + 7 = 39707
(a)
700 + 50 + _____ = 755
750 + _____ = 755
755 - 750 = 5
(b)
9000 + _____ + 60 = 9460
9060+ _____ = 9460
9460 - 9060 = 400
(c)
_____ + 70 + 6 = 6076
_____ + 76 = 6076
6076 - 76 = 6000
(d)
30000 + _____ + 7 = 39707
30007 + _____ = 39707
39707 - 30007 = 9700
Answer(s): 5, 400, 6000, 9700