why do they move the decimals when multiplying
Fractions and decimals are usually rational numbers. Besides, multiplying rational and irrational numbers is also similar.
no.
Yes.
0.0232
Very.
There is no difference in the procedure.
adding subtracting multiplying and dividing
No, it is not necessary. But it does help to be tidy.
Please see: Multiplying decimals
In price tags, Doces of medicine, Taxes, Adding, Subtracting, Multiplying, Division, Averages, Measurments, Weight.
There is almost no difference. The only difference is placing the decimal point.