Question

what is a decimal that is equivalent to three and ten hundredths

Answer 1

3.01 .   
if u mean three and ten as  thirteen hundredths then ur answer would be 0.013

Answer 2

"three and ten hundredths"
3 and 10 hundredths
3 + 10 hundredths
3 + 10 * (1/100)
3 + 10/100
3 + 1/10
3 + 0.1
3.1

three and ten hundredths is 3.1