To convert decimal into fraction count no of decimal places in decimal number. Let it be x. Then multiply and divide the decimal number with 10x(i) We have,
0.39 \(=\frac{39}{100}\)
(ii) We have,
0.750 \(=\frac{750}{1000}\) \(=\frac{750\div250}{1000\div250}\)
\(=\frac{3}{4}\)
(iii) We have,
2.15 \(=\frac{215}{100}\) \(=\frac{215\div5}{100\div5}\) \(=\frac{43}{20}\)
(iv) We have,
7.010 \(=\frac{7010}{1000}\) \(=\frac{7010\div10}{1000\div10}\)
\(=\frac{701}{100}\)
(v) We have,
9.90 \(=\frac{990}{100}\) \(=\frac{990\div10}{100\div10}\)
\(=\frac{99}{10}\)
(vi) We have,
\(1.0001 =\frac{10001}{10000}\)