Theo thứ tự độ chính xác `5 -> 50 -> 0,005 -> 0,5 -> 0,05: `
`a) 1234,675 -> 1230 -> 1200 -> 1234,68 -> 1235 -> 1234,7`
`b) 235,679 -> 240 -> 200 -> 235,68 -> 236 -> 235,7`
`c) 12345,898 -> 12350 -> 12300 -> 12345,90 -> 12346 -> 12345,9`
`d) 456,992 -> 460 -> 500 -> 456,99 -> 457 -> 457,0 `
`e) 1234595,889 -> 1234600 -> 1234600 -> 1234595,890 -> 1234596 -`> 1234595,9`