Ответ:30 999 + 1 = 31 000.10 000 − 1 = 9 999.25 909 + 1 = 25 910.100 000 − 1 = 99 999.90 100 − 1 = 90 099.40 000 − 1 = 39 999.39 099 + 1 = 39 100.699 999 + 1 = 700 000.