2.9. There are, of course, ten tenths in the value of 1. So 9 tenths is 9 out of that 10 which is 9/10 or 0.9 - just 0.1 less than 1.
Add the 2 in front and you have 2.9.
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0.2 it comes in back of decimal so this is the right answer
2 tenths is 0.2 and 13 hundredths is 0.13 in decimal form.
2.6
.2
It would be 15.2