  <table width="58%" border="1" align="center">
    <tr> 
      <td width="29%">Primeiro N&uacute;mero:</td>
      <td width="25%"> 
        <input type="text" name="pri_num" size="5" maxlength="5">
      </td>
      <td width="46%">&nbsp;</td>
    </tr>
    <tr> 
      <td width="29%">&nbsp;</td>
      <td width="25%">&nbsp;</td>
      <td width="46%"> 
        <input type="radio" name="sinal_oper" value="+">
        <font size="5"> + </font> 
        <input type="radio" name="sinal_oper" value="-">
        <font size="5"> - </font> 
        <input type="radio" name="sinal_oper" value="*">
        <font size="5"> * </font> 
        <input type="radio" name="sinal_oper" value="/">
        <font size="5"> / </font> 
      </td>
    </tr>
    <tr> 
      <td width="29%">Segundo N&uacute;mero</td>
      <td width="25%"> 
        <input type="text" name="seg_num" size="5" maxlength="5">
      </td>
      <td width="46%">&nbsp;</td>
    </tr>
  </table>