One tenth of a gram is called a decigram.
One tenth of a gram equals a decigram. One one hundreth of a gram equals a centigram and one one thousanth of a gram equals a milligram. See http://webhome.idirect.com/~stevk/themetricsystem.pdf
The tenth prefix is deci- indicated by "d" → 1/10 gram = 1 dg
It is one tenth.
There are 100.
1.0 is to the nearest tenth of a gram.
1 carat is exactly 0.2 gram. So a tenth would be 0.2/10= 0.02 gram.
one tenth as a decimal = 0.1
0.1 grams
100 milligams
"0.1g" means "one tenth of a gram of mass"
dg