Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 700 + 40 + _____ = 741
- 5000 + _____ + 90 = 5890
- _____ + 40 + 2 = 9042
- 70000 + _____ + 4 = 73504
(a)
700 + 40 + _____ = 741
740 + _____ = 741
741 - 740 = 1
(b)
5000 + _____ + 90 = 5890
5090+ _____ = 5890
5890 - 5090 = 800
(c)
_____ + 40 + 2 = 9042
_____ + 42 = 9042
9042 - 42 = 9000
(d)
70000 + _____ + 4 = 73504
70004 + _____ = 73504
73504 - 70004 = 3500
Answer(s): 1, 800, 9000, 3500