Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 800 + 50 + _____ = 852
- 4000 + _____ + 40 = 4640
- _____ + 10 + 4 = 1014
- 30000 + _____ + 3 = 34703
(a)
800 + 50 + _____ = 852
850 + _____ = 852
852 - 850 = 2
(b)
4000 + _____ + 40 = 4640
4040+ _____ = 4640
4640 - 4040 = 600
(c)
_____ + 10 + 4 = 1014
_____ + 14 = 1014
1014 - 14 = 1000
(d)
30000 + _____ + 3 = 34703
30003 + _____ = 34703
34703 - 30003 = 4700
Answer(s): 2, 600, 1000, 4700