My new math goal

My math goal: is to add and subtract decimals using place value.

To succeed in my goal I need to;
. know what tenths, hundredths, and thousandths are.
. know that 3.2 is the same as 3.20 or 3.200000
. use place value to add and subtract, 4.2+5 = 4+5=9+0.2=9.2