Answers

2015-07-15T21:22:30+08:00
Some numbers that round off to 80 are: 75, 77, 81, 83 and 84.
0
390, 376, 385, 405, 439
4597, 4797, 4906, 5128, 5387
15688, 17907, 19864, 21854, 23856
250864, 268094, 289086, 318647, 349999
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