Respuesta :

Hello!

A tenth is the first number after a decimal

When you round you look at the number to the right and see what number it is

If it is 5 or greater you round up 

If it is 4 or less you keep the number the same

Since 7 is greater than 5 you round up

The answer is 0.9

Hope this helps!
0.87
every number after a decimal point is TENTH.
the next number which is 7 is HUNDREDTH and since its higher than 5 we round it off to 8 to give us 9.(8+1=9)
our answer will be 0.9