Question

How do you convert 8 hectograms to decagrams?

Answer 1

Multiply by 10

Explanation:

The prefix "hecto" (`h`) means 100, and "deca" (`da`) means 10 of something/anything.

`1hg=100g=10xx10g=10dg`

Note:
The prefixes `da` and `h` are not in use very much.
Prefixes with a difference of `xx1000` are most common, an exception being the `c` in `cm=1//100m`

`m- = 1//1000` = milli
`k- =1000` = kilo
`M- = 1000000` = mega
Etc.

So with a `k$` you can throw a medium-sized party, a `M$` will make you a millionaire.