unser-interface problems using Mathematica as a calculator

*To*: mathgroup at smc.vnet.net*Subject*: [mg131984] unser-interface problems using Mathematica as a calculator*From*: Alan <alan.isaac at gmail.com>*Date*: Mon, 11 Nov 2013 00:05:12 -0500 (EST)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*Delivered-to*: l-mathgroup@wolfram.com*Delivered-to*: mathgroup-outx@smc.vnet.net*Delivered-to*: mathgroup-newsendx@smc.vnet.net

The example below illustrates why Mathematica's display rules for approximate numbers are very confusing for students. Should this be considered a user-interface bug? If not, why not? In any case, can the default display be changed to something more familiar from spreadsheets and other computing languages? Thanks, Alan Isaac In[217]:= tv = TimeValue[1, 0.04, 3] tv == 1.124864 tv == 1.12486 Out[217]= 1.12486 Out[218]= True Out[219]= False

**Follow-Ups**:**Re: unser-interface problems using Mathematica as a calculator***From:*Murray Eisenberg <murray@math.umass.edu>

**Re: unser-interface problems using Mathematica as a calculator***From:*Bob Hanlon <hanlonr357@gmail.com>