Answer: (distributive property)
20.
1/5 + 1/5 + 1/5 + 1/5 + 1/5 = 5/5 or 1
1/5 + 1/5 + 1/5 + 1/5 + 1/5 = 5/5 or 1
1/5 + 1/5 + 1/5 + 1/5 + 1/5 = 5/5 or 1
1/5 + 1/5 + 1/5 + 1/5 + 1/5 = 5/5 or 1
1/5 + 1/5 + 1/5 + 1/5 + 1/5 = 5/5 or 1
= 5 (total sums)
The total number of 1/5's = 25
20 + 5 = 25
25 - 5 = 20