The decimal point in three and seven-tenths goes after the whole number 3 and before the 7 tenths.
0.7
.7
.7
twenty seven and four tenths in decimal form
seven-tenths in decimal notation = 0.7
seven-tenths=0.7
1.7
.70
Seven and eight tenths in a decimal is 7.8.
The decimal notation for thirty and seven-tenths is 30.7
42 and seven tenths = 42.7 in decimal
2 and seven tenths in decimal = 2.7
1.7
1.7
7/10 = .70 = 70%
twenty-seven and five tenths = 27.5 in decimal