Answer:
0.8 or 8/10
Explanation:
1/10 can be converted to decimal form as 0.1.
70/100 can be converted to decimal form as 0.7
0.1 + 0.7 = 0.8
Another way is making use of a common denominator:
Common denominator --> 100
1/10 --> mutiply numerator and denominator by 10 --> 10/100
10/100 +70/100 = 80/100 = 8/10 = 0.8