38.5
5 and 6 are decimals. If the question involved "5 and 6 tenths," then the answer would be 5.6.
0.57
3 5/10 = 3 1/2 = 3.5
38/5
5 2/10 = 5.2
38 and 5 tens = 88
Tens is in the whole number columns. Tenths is in the decimals. 8526485.56 The last eight is the tens and the last 5 after the decimal is tenths.
five tenths
0.05
0.05
Think of it as five hundredth or 5/100 = 0.05
5 tenths of a dollar is 50 cents, or $0.50.