Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 690192 = 600000 + _____ + 100 + 92
- 218217 = _____ + 10000 + 8000 + 200 + 10 + 7
- 721561 = 700000 + 20000 + _____ + 500 + 60 + 1
- 655695 = 600000 + 50000 + 5000 + _____ + 90 + 5
(a)
690192 = 600000 + _____ + 100 + 92
690192 = 600000 + _____ + 192
690192 - 600000 - 192 = 90000
(b)
218217 = _____ + 10000 + 8000 + 200 + 10 + 7
218217 = _____ + 18217
218217 - 18217 = 200000
(c)
721561 = 700000 + 20000 + _____ + 500 + 60 + 1
721561 = 720000 + _____ + 561
721561 - 720000 - 561 = 1000
(d)
655695 = 600000 + 50000 + 5000 + _____ + 90 + 5
655695 = 655000 + _____ + 95
655695 - 655000 - 95 = 600
Answer(s): 90000, 200000, 1000, 600