The question is: 8/10+7/100 ?=? .87
To add fractions, we need a common denominator. 10 is a factor of 100, and to check this, 100/10 = 10. Therefore 10 x 10 equals 100.
8/10 (10/10) + 7/100
We need to multiply the denominator by 10 to get the common denominator of 100. But remember, what you to to the denominator must also be done to the numerator.
80/100+7/100 = 87/100
We can add the two fractions because they now have a common denominator.
87/100 = .87
So, yes it does.