This issue is corrected in 1.0v3.
ClarisWorks 1.0v2 spreadsheet is unable to properly sort calculated cells (cells containing formulas). For example, sorting on 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4 in ascending order will produce 0.5, 1.5, 1, 2, 3, 4, 2.5, 3.5 when the values are the results of calculations (numbers or dates).
The workaround is to select the range of cells to be sorted and copy them. Click in another area of the worksheet and select Paste Special from the Edit menu, pasting Values Only. The pasted cells will then sort properly since they are data and not calculations.