Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 600 + 90 + _____ = 698
- 2000 + _____ + 30 = 2930
- _____ + 90 + 5 = 3095
- 80000 + _____ + 3 = 85403
(a)
600 + 90 + _____ = 698
690 + _____ = 698
698 - 690 = 8
(b)
2000 + _____ + 30 = 2930
2030+ _____ = 2930
2930 - 2030 = 900
(c)
_____ + 90 + 5 = 3095
_____ + 95 = 3095
3095 - 95 = 3000
(d)
80000 + _____ + 3 = 85403
80003 + _____ = 85403
85403 - 80003 = 5400
Answer(s): 8, 900, 3000, 5400