Scott Caan goes by Scotty.
It is so very simple and quick to get the answer, especially since, IF you need it, you can use the calculator that comes with your computer. But since you are obviously not able to do so, the answer is 57.875.
463! It depends on what sum you are estimating from. If the question was 462+1, I would not estimate anything other than 463. If the question was square root of 214,369, I would go for an estimate between 450 and 500.
1, 2, 4, 17, 34, 68.
How many times does 25 go into 246
How many times can 48 go into 63
3 times with a remainder of 1
4 times, with a remainder of 8.