Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 582207 = 500000 + _____ + 200 + 7
- 321881 = _____ + 20000 + 1000 + 800 + 80 + 1
- 587485 = 500000 + 80000 + _____ + 400 + 80 + 5
- 139171 = 100000 + 30000 + 9000 + _____ + 70 + 1
(a)
582207 = 500000 + _____ + 200 + 7
582207 = 500000 + _____ + 207
582207 - 500000 - 207 = 82000
(b)
321881 = _____ + 20000 + 1000 + 800 + 80 + 1
321881 = _____ + 21881
321881 - 21881 = 300000
(c)
587485 = 500000 + 80000 + _____ + 400 + 80 + 5
587485 = 580000 + _____ + 485
587485 - 580000 - 485 = 7000
(d)
139171 = 100000 + 30000 + 9000 + _____ + 70 + 1
139171 = 139000 + _____ + 71
139171 - 139000 - 71 = 100
Answer(s): 82000, 300000, 7000, 100