Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 900 + 20 + _____ = 923
- 3000 + _____ + 40 = 3940
- _____ + 30 + 4 = 8034
- 70000 + _____ + 2 = 76302
(a)
900 + 20 + _____ = 923
920 + _____ = 923
923 - 920 = 3
(b)
3000 + _____ + 40 = 3940
3040+ _____ = 3940
3940 - 3040 = 900
(c)
_____ + 30 + 4 = 8034
_____ + 34 = 8034
8034 - 34 = 8000
(d)
70000 + _____ + 2 = 76302
70002 + _____ = 76302
76302 - 70002 = 6300
Answer(s): 3, 900, 8000, 6300