Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 600 + 30 + _____ = 636
- 4000 + _____ + 10 = 4610
- _____ + 50 + 9 = 6059
- 70000 + _____ + 6 = 72306
(a)
600 + 30 + _____ = 636
630 + _____ = 636
636 - 630 = 6
(b)
4000 + _____ + 10 = 4610
4010+ _____ = 4610
4610 - 4010 = 600
(c)
_____ + 50 + 9 = 6059
_____ + 59 = 6059
6059 - 59 = 6000
(d)
70000 + _____ + 6 = 72306
70006 + _____ = 72306
72306 - 70006 = 2300
Answer(s): 6, 600, 6000, 2300