Question

Find the value of x if 2000 grams = x kg.

Answer 1

kg is short term of kilogram, which is the SI unit of weight. Similarly, gm short term for gram is also a unit of weight, which is used in the C.G.S unit system. Further, the different units of weight commonly used differ from each other in terms of exponents of ten. Hence, milligram is${{10}^{-3}}$gram and similarly kilogram is${{10}^{3}}$gram.

Complete step-by-step answer:
The mass may be defined as the tool to quantify the matter present in the given object. Most commonly units that are used for the measurement of mass are gram and Kilogram. The SI unit of mass is Kilogram.
Most commonly used unit of weight in regular day to day life is kilograms (kg). However, in physics or mostly in the chemistry and biology fields, the common term is in gram. Since they deal with quantities on a much smaller scale, the scientific values are used. The scientific value always gives the value in terms of power of 10 with the unit of gram. Hence, the scientific expression of 2kg would be, $2\times {{10}^{3}}g$. Similarly, multiple other units of weight are discussed below.

Additional Information:

Other Units of mass commonly used to denote weight are:
Miligram(mg)which is equivalent to 0.001 gram.
Decigram(dg) which is equivalent to 0.1 gram
Centigram(cg) which is equivalent to .01 gram
Gram(g) which is equivalent to 1000 milligrams
Dekagram(dag) which is equivalent to 10 grams
Hectogram(hg) which is equivalent to 100 grams
Metric ton(t) which is equivalent to 1000 kilograms
Kilogram(Kg) which is equivalent to 1000 grams

Note: The prefix used in the units of mass stated in additional information like mili, deci, centi, gram, etc. are generic terms. These are used in the measurements of length also. So Students should focus on memorizing these to solve such types of questions.