Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 515239 = 500000 + _____ + 200 + 39
- 629589 = _____ + 20000 + 9000 + 500 + 80 + 9
- 699126 = 600000 + 90000 + _____ + 100 + 20 + 6
- 278462 = 200000 + 70000 + 8000 + _____ + 60 + 2
(a)
515239 = 500000 + _____ + 200 + 39
515239 = 500000 + _____ + 239
515239 - 500000 - 239 = 15000
(b)
629589 = _____ + 20000 + 9000 + 500 + 80 + 9
629589 = _____ + 29589
629589 - 29589 = 600000
(c)
699126 = 600000 + 90000 + _____ + 100 + 20 + 6
699126 = 690000 + _____ + 126
699126 - 690000 - 126 = 9000
(d)
278462 = 200000 + 70000 + 8000 + _____ + 60 + 2
278462 = 278000 + _____ + 62
278462 - 278000 - 62 = 400
Answer(s): 15000, 600000, 9000, 400