Given:
40 centigrams.
Find-: convert centigrams to grams.
Sol:
1 gram is equal to 100 centigrams.
[tex]1\text{ gram = 100 centigram}[/tex]So 1 centigram is:
[tex]\begin{gathered} 1\text{ gram = 100 centigram} \\ \\ 1\text{ centigram = }\frac{1}{100}\text{ gram} \end{gathered}[/tex]So 40 centigrams is:
[tex]\begin{gathered} 1\text{ centigram = }\frac{1}{100}\text{ gram} \\ \\ 1\times40\text{ centigrams = }\frac{1}{100}\times40\text{ gram} \\ \\ 40\text{ centigrams = }\frac{40}{100}\text{ gram} \\ \\ 40\text{ centigrams = }\frac{4}{10}\text{ grams} \\ \\ 40\text{ centigrams = }\frac{2}{5}\text{ grams} \\ \\ 40\text{ centigrams = 0.4 grams} \end{gathered}[/tex]40 centigrams is equal to 0.4 grams