Question 607420
It's good practice if you write out decimals the long way, too
Say you have:
{{{ 357.395388 }}}
This is:
(1) {{{ 357 + .3 + .09 + .005 + .0003 + .00008 + .000008 }}}
Now write it this way:
(2) {{{ 357 + 3/10 + 9/100 + 5/1000 + 3/10000 + 8/100000 + 8/1000000 }}}
---------------
Suppose I said "What is {{{ 357.395388 - .0003 }}}
Looking at (1), I now have
(1) {{{ 357 + .3 + .09 + .005 + 0 + .00008 + .000008 }}}
and, converting it back to a single decimal,
{{{ 357.395088 }}}
--------------
Each time you multiply by {{{ 10 }}}, you shift the decimal point
1 place to the right
{{{ 10 * 357.395388 = 3573.95388 }}}
{{{ 10*10*357.395388 = 35739.5388 }}}
{{{ 10*10*10*357.395388 = 357395.388 }}}
{{{ 10*10*10*10*357.395388 = 3573953.88 }}}
and so on
-----------
Each time you divide by {{{ 10 }}}, you shift the decimal point
1 place to the left