Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 400 + 10 + _____ = 419
- 3000 + _____ + 30 = 3430
- _____ + 30 + 3 = 4033
- 50000 + _____ + 2 = 57302
(a)
400 + 10 + _____ = 419
410 + _____ = 419
419 - 410 = 9
(b)
3000 + _____ + 30 = 3430
3030+ _____ = 3430
3430 - 3030 = 400
(c)
_____ + 30 + 3 = 4033
_____ + 33 = 4033
4033 - 33 = 4000
(d)
50000 + _____ + 2 = 57302
50002 + _____ = 57302
57302 - 50002 = 7300
Answer(s): 9, 400, 4000, 7300