To write twenty-seven and five tenths in decimal form, you simply add the whole number part (27) to the decimal part (0.5). This gives you 27.5 in decimal form. The decimal point separates the whole number part from the decimal part, with the decimal part representing the tenths place value.
0.7
twenty seven and four tenths in decimal form
1.7
13.7
42.7
seven and eight tenths
3.7 = three and seven tenths.
9004.7
230.7
37.4
You write fourteen and three tenths in decimal form as: 14.3