Question

What is the sum of the numbers $6.68$ and $0.8$?

Answer 1

Determine the sum of the numbers $6.68$ and $0.8$.

Find the sum.

$6.68+0.8=7.45$

In the addition, none of the original numbers can have more digits to the right of the decimal point than the result.

Since $0.8$ only has one digit after the decimal point, the value $7.48$ should be rounded to one decimal point.

Hence, the sum is $7.5$.