The following sentence is true: To find the number of hectograms in 4.5 kilograms, multiply 4.5 by 10.
The unit of a quantity is very important information. There are different units for a specific quantity. The main units of mass are: milligram (mg), centigram (cg), decigram (dg), gram (g), dekagram (dag), hectogram (hg) and kilogram (kg). The SI unit of mass is the kilogram (kg).
For solving this question, you should know the relation between the units that is shown below.
→ Multiply by 10 (x10)
(kg) (hg) (dag) (g) (dg) (cg) (mg)
← Divide by 10 (÷10)
This sentence is false because 34 dag = 34000 cg
This sentence is true because 4.5 kg= 45 hg
This sentence is false because 81 mg = 0.081 g
This sentence is false because 15.6 hg= 156 dag
Read more about the unit of mass here:
https://brainly.com/question/2193340
#SPJ1